diff --git a/Cargo.lock b/Cargo.lock
index ffb5a86..9509fdb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2025,7 +2025,7 @@ checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
 [[package]]
 name = "typify"
 version = "0.0.11-dev"
-source = "git+https://github.com/oxidecomputer/typify#2790d798ea650c08686d014fdd87c25d942806b1"
+source = "git+https://github.com/oxidecomputer/typify#c18d0452db86d57318eec40a14c5aca5a079e6f8"
 dependencies = [
  "typify-impl",
  "typify-macro",
@@ -2034,7 +2034,7 @@ dependencies = [
 [[package]]
 name = "typify-impl"
 version = "0.0.11-dev"
-source = "git+https://github.com/oxidecomputer/typify#2790d798ea650c08686d014fdd87c25d942806b1"
+source = "git+https://github.com/oxidecomputer/typify#c18d0452db86d57318eec40a14c5aca5a079e6f8"
 dependencies = [
  "heck",
  "log",
@@ -2052,7 +2052,7 @@ dependencies = [
 [[package]]
 name = "typify-macro"
 version = "0.0.11-dev"
-source = "git+https://github.com/oxidecomputer/typify#2790d798ea650c08686d014fdd87c25d942806b1"
+source = "git+https://github.com/oxidecomputer/typify#c18d0452db86d57318eec40a14c5aca5a079e6f8"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/progenitor-impl/tests/output/buildomat-builder-tagged.out b/progenitor-impl/tests/output/buildomat-builder-tagged.out
index 8ca0695..e40111d 100644
--- a/progenitor-impl/tests/output/buildomat-builder-tagged.out
+++ b/progenitor-impl/tests/output/buildomat-builder-tagged.out
@@ -325,7 +325,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Task> for super::Task {
             type Error = String;
-            fn try_from(value: Task) -> Result<Self, Self::Error> {
+            fn try_from(value: Task) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     name: value.name?,
@@ -399,7 +399,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TaskEvent> for super::TaskEvent {
             type Error = String;
-            fn try_from(value: TaskEvent) -> Result<Self, Self::Error> {
+            fn try_from(value: TaskEvent) -> Result<Self, String> {
                 Ok(Self {
                     payload: value.payload?,
                     seq: value.seq?,
@@ -460,7 +460,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TaskOutput> for super::TaskOutput {
             type Error = String;
-            fn try_from(value: TaskOutput) -> Result<Self, Self::Error> {
+            fn try_from(value: TaskOutput) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     path: value.path?,
@@ -520,7 +520,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TaskSubmit> for super::TaskSubmit {
             type Error = String;
-            fn try_from(value: TaskSubmit) -> Result<Self, Self::Error> {
+            fn try_from(value: TaskSubmit) -> Result<Self, String> {
                 Ok(Self {
                     name: value.name?,
                     output_rules: value.output_rules?,
@@ -556,7 +556,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TaskSubmitResult> for super::TaskSubmitResult {
             type Error = String;
-            fn try_from(value: TaskSubmitResult) -> Result<Self, Self::Error> {
+            fn try_from(value: TaskSubmitResult) -> Result<Self, String> {
                 Ok(Self { id: value.id? })
             }
         }
@@ -588,7 +588,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UploadedChunk> for super::UploadedChunk {
             type Error = String;
-            fn try_from(value: UploadedChunk) -> Result<Self, Self::Error> {
+            fn try_from(value: UploadedChunk) -> Result<Self, String> {
                 Ok(Self { id: value.id? })
             }
         }
@@ -620,7 +620,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UserCreate> for super::UserCreate {
             type Error = String;
-            fn try_from(value: UserCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: UserCreate) -> Result<Self, String> {
                 Ok(Self { name: value.name? })
             }
         }
@@ -676,7 +676,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UserCreateResult> for super::UserCreateResult {
             type Error = String;
-            fn try_from(value: UserCreateResult) -> Result<Self, Self::Error> {
+            fn try_from(value: UserCreateResult) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     name: value.name?,
@@ -724,7 +724,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WhoamiResult> for super::WhoamiResult {
             type Error = String;
-            fn try_from(value: WhoamiResult) -> Result<Self, Self::Error> {
+            fn try_from(value: WhoamiResult) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     name: value.name?,
@@ -819,7 +819,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Worker> for super::Worker {
             type Error = String;
-            fn try_from(value: Worker) -> Result<Self, Self::Error> {
+            fn try_from(value: Worker) -> Result<Self, String> {
                 Ok(Self {
                     deleted: value.deleted?,
                     id: value.id?,
@@ -882,7 +882,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerAddOutput> for super::WorkerAddOutput {
             type Error = String;
-            fn try_from(value: WorkerAddOutput) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerAddOutput) -> Result<Self, String> {
                 Ok(Self {
                     chunks: value.chunks?,
                     path: value.path?,
@@ -942,7 +942,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerAppendTask> for super::WorkerAppendTask {
             type Error = String;
-            fn try_from(value: WorkerAppendTask) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerAppendTask) -> Result<Self, String> {
                 Ok(Self {
                     payload: value.payload?,
                     stream: value.stream?,
@@ -990,7 +990,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerBootstrap> for super::WorkerBootstrap {
             type Error = String;
-            fn try_from(value: WorkerBootstrap) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerBootstrap) -> Result<Self, String> {
                 Ok(Self {
                     bootstrap: value.bootstrap?,
                     token: value.token?,
@@ -1025,7 +1025,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerBootstrapResult> for super::WorkerBootstrapResult {
             type Error = String;
-            fn try_from(value: WorkerBootstrapResult) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerBootstrapResult) -> Result<Self, String> {
                 Ok(Self { id: value.id? })
             }
         }
@@ -1057,7 +1057,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerCompleteTask> for super::WorkerCompleteTask {
             type Error = String;
-            fn try_from(value: WorkerCompleteTask) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerCompleteTask) -> Result<Self, String> {
                 Ok(Self {
                     failed: value.failed?,
                 })
@@ -1103,7 +1103,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerPingResult> for super::WorkerPingResult {
             type Error = String;
-            fn try_from(value: WorkerPingResult) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerPingResult) -> Result<Self, String> {
                 Ok(Self {
                     poweroff: value.poweroff?,
                     task: value.task?,
@@ -1162,7 +1162,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerPingTask> for super::WorkerPingTask {
             type Error = String;
-            fn try_from(value: WorkerPingTask) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerPingTask) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     output_rules: value.output_rules?,
@@ -1222,7 +1222,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerTask> for super::WorkerTask {
             type Error = String;
-            fn try_from(value: WorkerTask) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerTask) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     name: value.name?,
@@ -1258,7 +1258,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkersResult> for super::WorkersResult {
             type Error = String;
-            fn try_from(value: WorkersResult) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkersResult) -> Result<Self, String> {
                 Ok(Self {
                     workers: value.workers?,
                 })
diff --git a/progenitor-impl/tests/output/buildomat-builder.out b/progenitor-impl/tests/output/buildomat-builder.out
index 9dcc7a4..f78c17f 100644
--- a/progenitor-impl/tests/output/buildomat-builder.out
+++ b/progenitor-impl/tests/output/buildomat-builder.out
@@ -325,7 +325,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Task> for super::Task {
             type Error = String;
-            fn try_from(value: Task) -> Result<Self, Self::Error> {
+            fn try_from(value: Task) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     name: value.name?,
@@ -399,7 +399,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TaskEvent> for super::TaskEvent {
             type Error = String;
-            fn try_from(value: TaskEvent) -> Result<Self, Self::Error> {
+            fn try_from(value: TaskEvent) -> Result<Self, String> {
                 Ok(Self {
                     payload: value.payload?,
                     seq: value.seq?,
@@ -460,7 +460,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TaskOutput> for super::TaskOutput {
             type Error = String;
-            fn try_from(value: TaskOutput) -> Result<Self, Self::Error> {
+            fn try_from(value: TaskOutput) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     path: value.path?,
@@ -520,7 +520,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TaskSubmit> for super::TaskSubmit {
             type Error = String;
-            fn try_from(value: TaskSubmit) -> Result<Self, Self::Error> {
+            fn try_from(value: TaskSubmit) -> Result<Self, String> {
                 Ok(Self {
                     name: value.name?,
                     output_rules: value.output_rules?,
@@ -556,7 +556,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TaskSubmitResult> for super::TaskSubmitResult {
             type Error = String;
-            fn try_from(value: TaskSubmitResult) -> Result<Self, Self::Error> {
+            fn try_from(value: TaskSubmitResult) -> Result<Self, String> {
                 Ok(Self { id: value.id? })
             }
         }
@@ -588,7 +588,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UploadedChunk> for super::UploadedChunk {
             type Error = String;
-            fn try_from(value: UploadedChunk) -> Result<Self, Self::Error> {
+            fn try_from(value: UploadedChunk) -> Result<Self, String> {
                 Ok(Self { id: value.id? })
             }
         }
@@ -620,7 +620,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UserCreate> for super::UserCreate {
             type Error = String;
-            fn try_from(value: UserCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: UserCreate) -> Result<Self, String> {
                 Ok(Self { name: value.name? })
             }
         }
@@ -676,7 +676,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UserCreateResult> for super::UserCreateResult {
             type Error = String;
-            fn try_from(value: UserCreateResult) -> Result<Self, Self::Error> {
+            fn try_from(value: UserCreateResult) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     name: value.name?,
@@ -724,7 +724,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WhoamiResult> for super::WhoamiResult {
             type Error = String;
-            fn try_from(value: WhoamiResult) -> Result<Self, Self::Error> {
+            fn try_from(value: WhoamiResult) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     name: value.name?,
@@ -819,7 +819,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Worker> for super::Worker {
             type Error = String;
-            fn try_from(value: Worker) -> Result<Self, Self::Error> {
+            fn try_from(value: Worker) -> Result<Self, String> {
                 Ok(Self {
                     deleted: value.deleted?,
                     id: value.id?,
@@ -882,7 +882,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerAddOutput> for super::WorkerAddOutput {
             type Error = String;
-            fn try_from(value: WorkerAddOutput) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerAddOutput) -> Result<Self, String> {
                 Ok(Self {
                     chunks: value.chunks?,
                     path: value.path?,
@@ -942,7 +942,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerAppendTask> for super::WorkerAppendTask {
             type Error = String;
-            fn try_from(value: WorkerAppendTask) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerAppendTask) -> Result<Self, String> {
                 Ok(Self {
                     payload: value.payload?,
                     stream: value.stream?,
@@ -990,7 +990,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerBootstrap> for super::WorkerBootstrap {
             type Error = String;
-            fn try_from(value: WorkerBootstrap) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerBootstrap) -> Result<Self, String> {
                 Ok(Self {
                     bootstrap: value.bootstrap?,
                     token: value.token?,
@@ -1025,7 +1025,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerBootstrapResult> for super::WorkerBootstrapResult {
             type Error = String;
-            fn try_from(value: WorkerBootstrapResult) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerBootstrapResult) -> Result<Self, String> {
                 Ok(Self { id: value.id? })
             }
         }
@@ -1057,7 +1057,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerCompleteTask> for super::WorkerCompleteTask {
             type Error = String;
-            fn try_from(value: WorkerCompleteTask) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerCompleteTask) -> Result<Self, String> {
                 Ok(Self {
                     failed: value.failed?,
                 })
@@ -1103,7 +1103,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerPingResult> for super::WorkerPingResult {
             type Error = String;
-            fn try_from(value: WorkerPingResult) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerPingResult) -> Result<Self, String> {
                 Ok(Self {
                     poweroff: value.poweroff?,
                     task: value.task?,
@@ -1162,7 +1162,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerPingTask> for super::WorkerPingTask {
             type Error = String;
-            fn try_from(value: WorkerPingTask) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerPingTask) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     output_rules: value.output_rules?,
@@ -1222,7 +1222,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkerTask> for super::WorkerTask {
             type Error = String;
-            fn try_from(value: WorkerTask) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkerTask) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     name: value.name?,
@@ -1258,7 +1258,7 @@ pub mod types {
 
         impl std::convert::TryFrom<WorkersResult> for super::WorkersResult {
             type Error = String;
-            fn try_from(value: WorkersResult) -> Result<Self, Self::Error> {
+            fn try_from(value: WorkersResult) -> Result<Self, String> {
                 Ok(Self {
                     workers: value.workers?,
                 })
diff --git a/progenitor-impl/tests/output/keeper-builder-tagged.out b/progenitor-impl/tests/output/keeper-builder-tagged.out
index c680184..e5d8ce1 100644
--- a/progenitor-impl/tests/output/keeper-builder-tagged.out
+++ b/progenitor-impl/tests/output/keeper-builder-tagged.out
@@ -176,7 +176,7 @@ pub mod types {
 
         impl std::convert::TryFrom<EnrolBody> for super::EnrolBody {
             type Error = String;
-            fn try_from(value: EnrolBody) -> Result<Self, Self::Error> {
+            fn try_from(value: EnrolBody) -> Result<Self, String> {
                 Ok(Self {
                     host: value.host?,
                     key: value.key?,
@@ -211,7 +211,7 @@ pub mod types {
 
         impl std::convert::TryFrom<GlobalJobsResult> for super::GlobalJobsResult {
             type Error = String;
-            fn try_from(value: GlobalJobsResult) -> Result<Self, Self::Error> {
+            fn try_from(value: GlobalJobsResult) -> Result<Self, String> {
                 Ok(Self {
                     summary: value.summary?,
                 })
@@ -269,7 +269,7 @@ pub mod types {
 
         impl std::convert::TryFrom<OutputRecord> for super::OutputRecord {
             type Error = String;
-            fn try_from(value: OutputRecord) -> Result<Self, Self::Error> {
+            fn try_from(value: OutputRecord) -> Result<Self, String> {
                 Ok(Self {
                     msg: value.msg?,
                     stream: value.stream?,
@@ -317,7 +317,7 @@ pub mod types {
 
         impl std::convert::TryFrom<PingResult> for super::PingResult {
             type Error = String;
-            fn try_from(value: PingResult) -> Result<Self, Self::Error> {
+            fn try_from(value: PingResult) -> Result<Self, String> {
                 Ok(Self {
                     host: value.host?,
                     ok: value.ok?,
@@ -388,7 +388,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportFinishBody> for super::ReportFinishBody {
             type Error = String;
-            fn try_from(value: ReportFinishBody) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportFinishBody) -> Result<Self, String> {
                 Ok(Self {
                     duration_millis: value.duration_millis?,
                     end_time: value.end_time?,
@@ -473,7 +473,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportId> for super::ReportId {
             type Error = String;
-            fn try_from(value: ReportId) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportId) -> Result<Self, String> {
                 Ok(Self {
                     host: value.host?,
                     job: value.job?,
@@ -523,7 +523,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportOutputBody> for super::ReportOutputBody {
             type Error = String;
-            fn try_from(value: ReportOutputBody) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportOutputBody) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     record: value.record?,
@@ -558,7 +558,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportResult> for super::ReportResult {
             type Error = String;
-            fn try_from(value: ReportResult) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportResult) -> Result<Self, String> {
                 Ok(Self {
                     existed_already: value.existed_already?,
                 })
@@ -616,7 +616,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportStartBody> for super::ReportStartBody {
             type Error = String;
-            fn try_from(value: ReportStartBody) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportStartBody) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     script: value.script?,
@@ -715,7 +715,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportSummary> for super::ReportSummary {
             type Error = String;
-            fn try_from(value: ReportSummary) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportSummary) -> Result<Self, String> {
                 Ok(Self {
                     age_seconds: value.age_seconds?,
                     duration_seconds: value.duration_seconds?,
diff --git a/progenitor-impl/tests/output/keeper-builder.out b/progenitor-impl/tests/output/keeper-builder.out
index a8e6517..148e157 100644
--- a/progenitor-impl/tests/output/keeper-builder.out
+++ b/progenitor-impl/tests/output/keeper-builder.out
@@ -176,7 +176,7 @@ pub mod types {
 
         impl std::convert::TryFrom<EnrolBody> for super::EnrolBody {
             type Error = String;
-            fn try_from(value: EnrolBody) -> Result<Self, Self::Error> {
+            fn try_from(value: EnrolBody) -> Result<Self, String> {
                 Ok(Self {
                     host: value.host?,
                     key: value.key?,
@@ -211,7 +211,7 @@ pub mod types {
 
         impl std::convert::TryFrom<GlobalJobsResult> for super::GlobalJobsResult {
             type Error = String;
-            fn try_from(value: GlobalJobsResult) -> Result<Self, Self::Error> {
+            fn try_from(value: GlobalJobsResult) -> Result<Self, String> {
                 Ok(Self {
                     summary: value.summary?,
                 })
@@ -269,7 +269,7 @@ pub mod types {
 
         impl std::convert::TryFrom<OutputRecord> for super::OutputRecord {
             type Error = String;
-            fn try_from(value: OutputRecord) -> Result<Self, Self::Error> {
+            fn try_from(value: OutputRecord) -> Result<Self, String> {
                 Ok(Self {
                     msg: value.msg?,
                     stream: value.stream?,
@@ -317,7 +317,7 @@ pub mod types {
 
         impl std::convert::TryFrom<PingResult> for super::PingResult {
             type Error = String;
-            fn try_from(value: PingResult) -> Result<Self, Self::Error> {
+            fn try_from(value: PingResult) -> Result<Self, String> {
                 Ok(Self {
                     host: value.host?,
                     ok: value.ok?,
@@ -388,7 +388,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportFinishBody> for super::ReportFinishBody {
             type Error = String;
-            fn try_from(value: ReportFinishBody) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportFinishBody) -> Result<Self, String> {
                 Ok(Self {
                     duration_millis: value.duration_millis?,
                     end_time: value.end_time?,
@@ -473,7 +473,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportId> for super::ReportId {
             type Error = String;
-            fn try_from(value: ReportId) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportId) -> Result<Self, String> {
                 Ok(Self {
                     host: value.host?,
                     job: value.job?,
@@ -523,7 +523,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportOutputBody> for super::ReportOutputBody {
             type Error = String;
-            fn try_from(value: ReportOutputBody) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportOutputBody) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     record: value.record?,
@@ -558,7 +558,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportResult> for super::ReportResult {
             type Error = String;
-            fn try_from(value: ReportResult) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportResult) -> Result<Self, String> {
                 Ok(Self {
                     existed_already: value.existed_already?,
                 })
@@ -616,7 +616,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportStartBody> for super::ReportStartBody {
             type Error = String;
-            fn try_from(value: ReportStartBody) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportStartBody) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     script: value.script?,
@@ -715,7 +715,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ReportSummary> for super::ReportSummary {
             type Error = String;
-            fn try_from(value: ReportSummary) -> Result<Self, Self::Error> {
+            fn try_from(value: ReportSummary) -> Result<Self, String> {
                 Ok(Self {
                     age_seconds: value.age_seconds?,
                     duration_seconds: value.duration_seconds?,
diff --git a/progenitor-impl/tests/output/nexus-builder-tagged.out b/progenitor-impl/tests/output/nexus-builder-tagged.out
index c52dbce..e40f252 100644
--- a/progenitor-impl/tests/output/nexus-builder-tagged.out
+++ b/progenitor-impl/tests/output/nexus-builder-tagged.out
@@ -81,14 +81,14 @@ pub mod types {
     pub struct BlockSize(i64);
     impl std::ops::Deref for BlockSize {
         type Target = i64;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &i64 {
             &self.0
         }
     }
 
     impl std::convert::TryFrom<i64> for BlockSize {
         type Error = &'static str;
-        fn try_from(value: i64) -> Result<Self, Self::Error> {
+        fn try_from(value: i64) -> Result<Self, &'static str> {
             if ![512_i64, 2048_i64, 4096_i64].contains(&value) {
                 Err("invalid value")
             } else {
@@ -108,7 +108,7 @@ pub mod types {
     pub struct ByteCount(pub u64);
     impl std::ops::Deref for ByteCount {
         type Target = u64;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &u64 {
             &self.0
         }
     }
@@ -204,7 +204,7 @@ pub mod types {
 
     impl std::str::FromStr for DatumType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "bool" => Ok(Self::Bool),
                 "i64" => Ok(Self::I64),
@@ -220,6 +220,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for DatumType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for DatumType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct DerEncodedKeyPair {
         ///request signing private key (base64 encoded der file)
@@ -368,7 +382,7 @@ pub mod types {
 
     impl std::str::FromStr for DiskMetricName {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "activated" => Ok(Self::Activated),
                 "flush" => Ok(Self::Flush),
@@ -381,6 +395,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for DiskMetricName {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for DiskMetricName {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct DiskResultsPage {
@@ -548,7 +576,7 @@ pub mod types {
 
     impl std::str::FromStr for FieldSource {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "target" => Ok(Self::Target),
                 "metric" => Ok(Self::Metric),
@@ -557,6 +585,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for FieldSource {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for FieldSource {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The `FieldType` identifies the data type of a target or metric field.
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum FieldType {
@@ -586,7 +628,7 @@ pub mod types {
 
     impl std::str::FromStr for FieldType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "string" => Ok(Self::String),
                 "i64" => Ok(Self::I64),
@@ -598,6 +640,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for FieldType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for FieldType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum FleetRole {
         #[serde(rename = "admin")]
@@ -620,7 +676,7 @@ pub mod types {
 
     impl std::str::FromStr for FleetRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -630,6 +686,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for FleetRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for FleetRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -867,7 +937,7 @@ pub mod types {
 
     impl std::str::FromStr for IdSortMode {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "id_ascending" => Ok(Self::IdAscending),
                 _ => Err("invalid value"),
@@ -875,6 +945,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of an [`IdentityProvider`]
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct IdentityProvider {
@@ -930,7 +1014,7 @@ pub mod types {
 
     impl std::str::FromStr for IdentityProviderType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "saml" => Ok(Self::Saml),
                 _ => Err("invalid value"),
@@ -938,6 +1022,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IdentityProviderType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IdentityProviderType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Describes what kind of identity is described by an id
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum IdentityType {
@@ -955,7 +1053,7 @@ pub mod types {
 
     impl std::str::FromStr for IdentityType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "silo_user" => Ok(Self::SiloUser),
                 _ => Err("invalid value"),
@@ -963,6 +1061,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IdentityType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IdentityType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     #[serde(tag = "type")]
     pub enum IdpMetadataSource {
@@ -1090,7 +1202,7 @@ pub mod types {
     pub struct InstanceCpuCount(pub u16);
     impl std::ops::Deref for InstanceCpuCount {
         type Target = u16;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &u16 {
             &self.0
         }
     }
@@ -1264,7 +1376,7 @@ pub mod types {
 
     impl std::str::FromStr for InstanceState {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "creating" => Ok(Self::Creating),
                 "starting" => Ok(Self::Starting),
@@ -1281,6 +1393,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The kind of an external IP address for an instance
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum IpKind {
@@ -1301,7 +1427,7 @@ pub mod types {
 
     impl std::str::FromStr for IpKind {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "ephemeral" => Ok(Self::Ephemeral),
                 "floating" => Ok(Self::Floating),
@@ -1310,6 +1436,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IpKind {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IpKind {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     #[serde(untagged)]
     pub enum IpNet {
@@ -1317,27 +1457,30 @@ pub mod types {
         V6(Ipv6Net),
     }
 
+    impl std::str::FromStr for IpNet {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
+            if let Ok(v) = value.parse() {
+                Ok(Self::V4(v))
+            } else if let Ok(v) = value.parse() {
+                Ok(Self::V6(v))
+            } else {
+                Err("string conversion failed for all variants")
+            }
+        }
+    }
+
     impl std::convert::TryFrom<&str> for IpNet {
         type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
-            Err("")
-                .or_else(|_: Self::Error| Ok(Self::V4(Ipv4Net::try_from(value)?)))
-                .or_else(|_: Self::Error| Ok(Self::V6(Ipv6Net::try_from(value)?)))
-                .map_err(|_: Self::Error| "string conversion failed for all variants")
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
     impl std::convert::TryFrom<&String> for IpNet {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
-        }
-    }
-
-    impl std::convert::TryFrom<String> for IpNet {
-        type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1465,30 +1608,30 @@ pub mod types {
     pub struct Ipv4Net(String);
     impl std::ops::Deref for Ipv4Net {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for Ipv4Net {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for Ipv4Net {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if regress :: Regex :: new ("^(10\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/([8-9]|1[0-9]|2[0-9]|3[0-2])|172\\.(1[6-9]|2[0-9]|3[0-1])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[2-9]|2[0-9]|3[0-2])|192\\.168\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[6-9]|2[0-9]|3[0-2]))$") . unwrap () . find (value) . is_none () { return Err ("doesn't match pattern \"^(10\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/([8-9]|1[0-9]|2[0-9]|3[0-2])|172\\.(1[6-9]|2[0-9]|3[0-1])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[2-9]|2[0-9]|3[0-2])|192\\.168\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[6-9]|2[0-9]|3[0-2]))$\"") ; }
             Ok(Self(value.to_string()))
         }
     }
 
-    impl std::convert::TryFrom<&String> for Ipv4Net {
+    impl std::convert::TryFrom<&str> for Ipv4Net {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for Ipv4Net {
+    impl std::convert::TryFrom<&String> for Ipv4Net {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1497,8 +1640,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1522,30 +1666,30 @@ pub mod types {
     pub struct Ipv6Net(String);
     impl std::ops::Deref for Ipv6Net {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for Ipv6Net {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for Ipv6Net {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if regress :: Regex :: new ("^([fF][dD])[0-9a-fA-F]{2}:(([0-9a-fA-F]{1,4}:){6}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,6}:)\\/([1-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8])$") . unwrap () . find (value) . is_none () { return Err ("doesn't match pattern \"^([fF][dD])[0-9a-fA-F]{2}:(([0-9a-fA-F]{1,4}:){6}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,6}:)\\/([1-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8])$\"") ; }
             Ok(Self(value.to_string()))
         }
     }
 
-    impl std::convert::TryFrom<&String> for Ipv6Net {
+    impl std::convert::TryFrom<&str> for Ipv6Net {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for Ipv6Net {
+    impl std::convert::TryFrom<&String> for Ipv6Net {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1554,8 +1698,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1580,14 +1725,14 @@ pub mod types {
     pub struct L4PortRange(String);
     impl std::ops::Deref for L4PortRange {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for L4PortRange {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for L4PortRange {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 11usize {
                 return Err("longer than 11 characters");
             }
@@ -1605,17 +1750,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for L4PortRange {
+    impl std::convert::TryFrom<&str> for L4PortRange {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for L4PortRange {
+    impl std::convert::TryFrom<&String> for L4PortRange {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1624,8 +1769,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1634,14 +1780,14 @@ pub mod types {
     pub struct MacAddr(String);
     impl std::ops::Deref for MacAddr {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for MacAddr {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for MacAddr {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 17usize {
                 return Err("longer than 17 characters");
             }
@@ -1659,17 +1805,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for MacAddr {
+    impl std::convert::TryFrom<&str> for MacAddr {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for MacAddr {
+    impl std::convert::TryFrom<&String> for MacAddr {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1678,8 +1824,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1719,14 +1866,14 @@ pub mod types {
     pub struct Name(String);
     impl std::ops::Deref for Name {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for Name {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for Name {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 63usize {
                 return Err("longer than 63 characters");
             }
@@ -1735,17 +1882,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for Name {
+    impl std::convert::TryFrom<&str> for Name {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for Name {
+    impl std::convert::TryFrom<&String> for Name {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1754,8 +1901,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1782,7 +1930,7 @@ pub mod types {
 
     impl std::str::FromStr for NameOrIdSortMode {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "name_ascending" => Ok(Self::NameAscending),
                 "name_descending" => Ok(Self::NameDescending),
@@ -1792,6 +1940,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for NameOrIdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for NameOrIdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Supported set of sort modes for scanning by name only
     ///
     ///Currently, we only support scanning in ascending order.
@@ -1811,7 +1973,7 @@ pub mod types {
 
     impl std::str::FromStr for NameSortMode {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "name_ascending" => Ok(Self::NameAscending),
                 _ => Err("invalid value"),
@@ -1819,6 +1981,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for NameSortMode {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for NameSortMode {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `NetworkInterface` represents a virtual network interface device.
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct NetworkInterface {
@@ -1996,7 +2172,7 @@ pub mod types {
 
     impl std::str::FromStr for OrganizationRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -2006,6 +2182,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for OrganizationRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for OrganizationRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2133,7 +2323,7 @@ pub mod types {
 
     impl std::str::FromStr for ProjectRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -2143,6 +2333,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for ProjectRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for ProjectRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2247,14 +2451,14 @@ pub mod types {
     pub struct RoleName(String);
     impl std::ops::Deref for RoleName {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for RoleName {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for RoleName {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 63usize {
                 return Err("longer than 63 characters");
             }
@@ -2269,17 +2473,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for RoleName {
+    impl std::convert::TryFrom<&str> for RoleName {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for RoleName {
+    impl std::convert::TryFrom<&String> for RoleName {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -2288,8 +2492,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -2427,7 +2632,7 @@ pub mod types {
 
     impl std::str::FromStr for RouterRouteKind {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "default" => Ok(Self::Default),
                 "vpc_subnet" => Ok(Self::VpcSubnet),
@@ -2438,6 +2643,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for RouterRouteKind {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for RouterRouteKind {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct RouterRouteResultsPage {
@@ -2671,7 +2890,7 @@ pub mod types {
 
     impl std::str::FromStr for SiloRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -2681,6 +2900,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for SiloRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for SiloRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2883,14 +3116,14 @@ pub mod types {
     pub struct TimeseriesName(String);
     impl std::ops::Deref for TimeseriesName {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for TimeseriesName {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for TimeseriesName {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if regress::Regex::new(
                 "(([a-z]+[a-z0-9]*)(_([a-z0-9]+))*):(([a-z]+[a-z0-9]*)(_([a-z0-9]+))*)",
             )
@@ -2904,17 +3137,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for TimeseriesName {
+    impl std::convert::TryFrom<&str> for TimeseriesName {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for TimeseriesName {
+    impl std::convert::TryFrom<&String> for TimeseriesName {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -2923,8 +3156,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -3033,7 +3267,7 @@ pub mod types {
 
     impl std::str::FromStr for UserProvisionType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "fixed" => Ok(Self::Fixed),
                 "jit" => Ok(Self::Jit),
@@ -3042,6 +3276,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for UserProvisionType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for UserProvisionType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct UserResultsPage {
@@ -3163,7 +3411,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleAction {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "allow" => Ok(Self::Allow),
                 "deny" => Ok(Self::Deny),
@@ -3172,6 +3420,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleAction {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleAction {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum VpcFirewallRuleDirection {
         #[serde(rename = "inbound")]
@@ -3191,7 +3453,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleDirection {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "inbound" => Ok(Self::Inbound),
                 "outbound" => Ok(Self::Outbound),
@@ -3200,6 +3462,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleDirection {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleDirection {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Filter for a firewall rule. A given packet must match every field that
     /// is present for the rule to apply to it. A packet matches a field if any
     /// entry in that field matches the packet.
@@ -3268,7 +3544,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleProtocol {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "TCP" => Ok(Self::Tcp),
                 "UDP" => Ok(Self::Udp),
@@ -3278,6 +3554,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleProtocol {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleProtocol {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum VpcFirewallRuleStatus {
         #[serde(rename = "disabled")]
@@ -3297,7 +3587,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleStatus {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "disabled" => Ok(Self::Disabled),
                 "enabled" => Ok(Self::Enabled),
@@ -3306,6 +3596,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleStatus {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleStatus {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `VpcFirewallRuleTarget` is used to specify the set of [`Instance`]s to
     /// which a firewall rule applies.
     #[derive(Clone, Debug, Deserialize, Serialize)]
@@ -3455,7 +3759,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcRouterKind {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "system" => Ok(Self::System),
                 "custom" => Ok(Self::Custom),
@@ -3464,6 +3768,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcRouterKind {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcRouterKind {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct VpcRouterResultsPage {
@@ -3641,7 +3959,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Bindouble> for super::Bindouble {
             type Error = String;
-            fn try_from(value: Bindouble) -> Result<Self, Self::Error> {
+            fn try_from(value: Bindouble) -> Result<Self, String> {
                 Ok(Self {
                     count: value.count?,
                     range: value.range?,
@@ -3688,7 +4006,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Binint64> for super::Binint64 {
             type Error = String;
-            fn try_from(value: Binint64) -> Result<Self, Self::Error> {
+            fn try_from(value: Binint64) -> Result<Self, String> {
                 Ok(Self {
                     count: value.count?,
                     range: value.range?,
@@ -3735,7 +4053,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Cumulativedouble> for super::Cumulativedouble {
             type Error = String;
-            fn try_from(value: Cumulativedouble) -> Result<Self, Self::Error> {
+            fn try_from(value: Cumulativedouble) -> Result<Self, String> {
                 Ok(Self {
                     start_time: value.start_time?,
                     value: value.value?,
@@ -3782,7 +4100,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Cumulativeint64> for super::Cumulativeint64 {
             type Error = String;
-            fn try_from(value: Cumulativeint64) -> Result<Self, Self::Error> {
+            fn try_from(value: Cumulativeint64) -> Result<Self, String> {
                 Ok(Self {
                     start_time: value.start_time?,
                     value: value.value?,
@@ -3829,7 +4147,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DerEncodedKeyPair> for super::DerEncodedKeyPair {
             type Error = String;
-            fn try_from(value: DerEncodedKeyPair) -> Result<Self, Self::Error> {
+            fn try_from(value: DerEncodedKeyPair) -> Result<Self, String> {
                 Ok(Self {
                     private_key: value.private_key?,
                     public_cert: value.public_cert?,
@@ -3888,7 +4206,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DeviceAccessTokenRequest> for super::DeviceAccessTokenRequest {
             type Error = String;
-            fn try_from(value: DeviceAccessTokenRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: DeviceAccessTokenRequest) -> Result<Self, String> {
                 Ok(Self {
                     client_id: value.client_id?,
                     device_code: value.device_code?,
@@ -3924,7 +4242,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DeviceAuthRequest> for super::DeviceAuthRequest {
             type Error = String;
-            fn try_from(value: DeviceAuthRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: DeviceAuthRequest) -> Result<Self, String> {
                 Ok(Self {
                     client_id: value.client_id?,
                 })
@@ -3958,7 +4276,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DeviceAuthVerify> for super::DeviceAuthVerify {
             type Error = String;
-            fn try_from(value: DeviceAuthVerify) -> Result<Self, Self::Error> {
+            fn try_from(value: DeviceAuthVerify) -> Result<Self, String> {
                 Ok(Self {
                     user_code: value.user_code?,
                 })
@@ -4124,7 +4442,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Disk> for super::Disk {
             type Error = String;
-            fn try_from(value: Disk) -> Result<Self, Self::Error> {
+            fn try_from(value: Disk) -> Result<Self, String> {
                 Ok(Self {
                     block_size: value.block_size?,
                     description: value.description?,
@@ -4205,7 +4523,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DiskCreate> for super::DiskCreate {
             type Error = String;
-            fn try_from(value: DiskCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: DiskCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     disk_source: value.disk_source?,
@@ -4242,7 +4560,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DiskIdentifier> for super::DiskIdentifier {
             type Error = String;
-            fn try_from(value: DiskIdentifier) -> Result<Self, Self::Error> {
+            fn try_from(value: DiskIdentifier) -> Result<Self, String> {
                 Ok(Self { name: value.name? })
             }
         }
@@ -4286,7 +4604,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DiskResultsPage> for super::DiskResultsPage {
             type Error = String;
-            fn try_from(value: DiskResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: DiskResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -4333,7 +4651,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Distribution> for super::Distribution {
             type Error = String;
-            fn try_from(value: Distribution) -> Result<Self, Self::Error> {
+            fn try_from(value: Distribution) -> Result<Self, String> {
                 Ok(Self {
                     name: value.name?,
                     version: value.version?,
@@ -4392,7 +4710,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Error> for super::Error {
             type Error = String;
-            fn try_from(value: Error) -> Result<Self, Self::Error> {
+            fn try_from(value: Error) -> Result<Self, String> {
                 Ok(Self {
                     error_code: value.error_code?,
                     message: value.message?,
@@ -4440,7 +4758,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ExternalIp> for super::ExternalIp {
             type Error = String;
-            fn try_from(value: ExternalIp) -> Result<Self, Self::Error> {
+            fn try_from(value: ExternalIp) -> Result<Self, String> {
                 Ok(Self {
                     ip: value.ip?,
                     kind: value.kind?,
@@ -4487,7 +4805,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ExternalIpResultsPage> for super::ExternalIpResultsPage {
             type Error = String;
-            fn try_from(value: ExternalIpResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: ExternalIpResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -4546,7 +4864,7 @@ pub mod types {
 
         impl std::convert::TryFrom<FieldSchema> for super::FieldSchema {
             type Error = String;
-            fn try_from(value: FieldSchema) -> Result<Self, Self::Error> {
+            fn try_from(value: FieldSchema) -> Result<Self, String> {
                 Ok(Self {
                     name: value.name?,
                     source: value.source?,
@@ -4585,7 +4903,7 @@ pub mod types {
 
         impl std::convert::TryFrom<FleetRolePolicy> for super::FleetRolePolicy {
             type Error = String;
-            fn try_from(value: FleetRolePolicy) -> Result<Self, Self::Error> {
+            fn try_from(value: FleetRolePolicy) -> Result<Self, String> {
                 Ok(Self {
                     role_assignments: value.role_assignments?,
                 })
@@ -4643,7 +4961,7 @@ pub mod types {
 
         impl std::convert::TryFrom<FleetRoleRoleAssignment> for super::FleetRoleRoleAssignment {
             type Error = String;
-            fn try_from(value: FleetRoleRoleAssignment) -> Result<Self, Self::Error> {
+            fn try_from(value: FleetRoleRoleAssignment) -> Result<Self, String> {
                 Ok(Self {
                     identity_id: value.identity_id?,
                     identity_type: value.identity_type?,
@@ -4799,7 +5117,7 @@ pub mod types {
 
         impl std::convert::TryFrom<GlobalImage> for super::GlobalImage {
             type Error = String;
-            fn try_from(value: GlobalImage) -> Result<Self, Self::Error> {
+            fn try_from(value: GlobalImage) -> Result<Self, String> {
                 Ok(Self {
                     block_size: value.block_size?,
                     description: value.description?,
@@ -4891,7 +5209,7 @@ pub mod types {
 
         impl std::convert::TryFrom<GlobalImageCreate> for super::GlobalImageCreate {
             type Error = String;
-            fn try_from(value: GlobalImageCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: GlobalImageCreate) -> Result<Self, String> {
                 Ok(Self {
                     block_size: value.block_size?,
                     description: value.description?,
@@ -4941,7 +5259,7 @@ pub mod types {
 
         impl std::convert::TryFrom<GlobalImageResultsPage> for super::GlobalImageResultsPage {
             type Error = String;
-            fn try_from(value: GlobalImageResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: GlobalImageResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -5000,7 +5318,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Histogramdouble> for super::Histogramdouble {
             type Error = String;
-            fn try_from(value: Histogramdouble) -> Result<Self, Self::Error> {
+            fn try_from(value: Histogramdouble) -> Result<Self, String> {
                 Ok(Self {
                     bins: value.bins?,
                     n_samples: value.n_samples?,
@@ -5060,7 +5378,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Histogramint64> for super::Histogramint64 {
             type Error = String;
-            fn try_from(value: Histogramint64) -> Result<Self, Self::Error> {
+            fn try_from(value: Histogramint64) -> Result<Self, String> {
                 Ok(Self {
                     bins: value.bins?,
                     n_samples: value.n_samples?,
@@ -5156,7 +5474,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IdentityProvider> for super::IdentityProvider {
             type Error = String;
-            fn try_from(value: IdentityProvider) -> Result<Self, Self::Error> {
+            fn try_from(value: IdentityProvider) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -5207,7 +5525,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IdentityProviderResultsPage> for super::IdentityProviderResultsPage {
             type Error = String;
-            fn try_from(value: IdentityProviderResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: IdentityProviderResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -5362,7 +5680,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Image> for super::Image {
             type Error = String;
-            fn try_from(value: Image) -> Result<Self, Self::Error> {
+            fn try_from(value: Image) -> Result<Self, String> {
                 Ok(Self {
                     block_size: value.block_size?,
                     description: value.description?,
@@ -5442,7 +5760,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ImageCreate> for super::ImageCreate {
             type Error = String;
-            fn try_from(value: ImageCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: ImageCreate) -> Result<Self, String> {
                 Ok(Self {
                     block_size: value.block_size?,
                     description: value.description?,
@@ -5491,7 +5809,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ImageResultsPage> for super::ImageResultsPage {
             type Error = String;
-            fn try_from(value: ImageResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: ImageResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -5651,7 +5969,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Instance> for super::Instance {
             type Error = String;
-            fn try_from(value: Instance) -> Result<Self, Self::Error> {
+            fn try_from(value: Instance) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     hostname: value.hostname?,
@@ -5794,7 +6112,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceCreate> for super::InstanceCreate {
             type Error = String;
-            fn try_from(value: InstanceCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     disks: value.disks?,
@@ -5836,7 +6154,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceMigrate> for super::InstanceMigrate {
             type Error = String;
-            fn try_from(value: InstanceMigrate) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceMigrate) -> Result<Self, String> {
                 Ok(Self {
                     dst_sled_id: value.dst_sled_id?,
                 })
@@ -5882,7 +6200,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceResultsPage> for super::InstanceResultsPage {
             type Error = String;
-            fn try_from(value: InstanceResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -5932,7 +6250,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceSerialConsoleData> for super::InstanceSerialConsoleData {
             type Error = String;
-            fn try_from(value: InstanceSerialConsoleData) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceSerialConsoleData) -> Result<Self, String> {
                 Ok(Self {
                     data: value.data?,
                     last_byte_offset: value.last_byte_offset?,
@@ -6027,7 +6345,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPool> for super::IpPool {
             type Error = String;
-            fn try_from(value: IpPool) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPool) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -6102,7 +6420,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPoolCreate> for super::IpPoolCreate {
             type Error = String;
-            fn try_from(value: IpPoolCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPoolCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -6163,7 +6481,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPoolRange> for super::IpPoolRange {
             type Error = String;
-            fn try_from(value: IpPoolRange) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPoolRange) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     range: value.range?,
@@ -6211,7 +6529,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPoolRangeResultsPage> for super::IpPoolRangeResultsPage {
             type Error = String;
-            fn try_from(value: IpPoolRangeResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPoolRangeResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -6258,7 +6576,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPoolResultsPage> for super::IpPoolResultsPage {
             type Error = String;
-            fn try_from(value: IpPoolResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPoolResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -6305,7 +6623,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPoolUpdate> for super::IpPoolUpdate {
             type Error = String;
-            fn try_from(value: IpPoolUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPoolUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -6352,7 +6670,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Ipv4Range> for super::Ipv4Range {
             type Error = String;
-            fn try_from(value: Ipv4Range) -> Result<Self, Self::Error> {
+            fn try_from(value: Ipv4Range) -> Result<Self, String> {
                 Ok(Self {
                     first: value.first?,
                     last: value.last?,
@@ -6399,7 +6717,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Ipv6Range> for super::Ipv6Range {
             type Error = String;
-            fn try_from(value: Ipv6Range) -> Result<Self, Self::Error> {
+            fn try_from(value: Ipv6Range) -> Result<Self, String> {
                 Ok(Self {
                     first: value.first?,
                     last: value.last?,
@@ -6446,7 +6764,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Measurement> for super::Measurement {
             type Error = String;
-            fn try_from(value: Measurement) -> Result<Self, Self::Error> {
+            fn try_from(value: Measurement) -> Result<Self, String> {
                 Ok(Self {
                     datum: value.datum?,
                     timestamp: value.timestamp?,
@@ -6493,7 +6811,7 @@ pub mod types {
 
         impl std::convert::TryFrom<MeasurementResultsPage> for super::MeasurementResultsPage {
             type Error = String;
-            fn try_from(value: MeasurementResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: MeasurementResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -6648,7 +6966,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterface> for super::NetworkInterface {
             type Error = String;
-            fn try_from(value: NetworkInterface) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterface) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -6740,7 +7058,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterfaceCreate> for super::NetworkInterfaceCreate {
             type Error = String;
-            fn try_from(value: NetworkInterfaceCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterfaceCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     ip: value.ip?,
@@ -6790,7 +7108,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterfaceResultsPage> for super::NetworkInterfaceResultsPage {
             type Error = String;
-            fn try_from(value: NetworkInterfaceResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterfaceResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -6849,7 +7167,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterfaceUpdate> for super::NetworkInterfaceUpdate {
             type Error = String;
-            fn try_from(value: NetworkInterfaceUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterfaceUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     make_primary: value.make_primary?,
@@ -6933,7 +7251,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Organization> for super::Organization {
             type Error = String;
-            fn try_from(value: Organization) -> Result<Self, Self::Error> {
+            fn try_from(value: Organization) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -6983,7 +7301,7 @@ pub mod types {
 
         impl std::convert::TryFrom<OrganizationCreate> for super::OrganizationCreate {
             type Error = String;
-            fn try_from(value: OrganizationCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: OrganizationCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -7030,7 +7348,7 @@ pub mod types {
 
         impl std::convert::TryFrom<OrganizationResultsPage> for super::OrganizationResultsPage {
             type Error = String;
-            fn try_from(value: OrganizationResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: OrganizationResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -7068,7 +7386,7 @@ pub mod types {
 
         impl std::convert::TryFrom<OrganizationRolePolicy> for super::OrganizationRolePolicy {
             type Error = String;
-            fn try_from(value: OrganizationRolePolicy) -> Result<Self, Self::Error> {
+            fn try_from(value: OrganizationRolePolicy) -> Result<Self, String> {
                 Ok(Self {
                     role_assignments: value.role_assignments?,
                 })
@@ -7128,7 +7446,7 @@ pub mod types {
             for super::OrganizationRoleRoleAssignment
         {
             type Error = String;
-            fn try_from(value: OrganizationRoleRoleAssignment) -> Result<Self, Self::Error> {
+            fn try_from(value: OrganizationRoleRoleAssignment) -> Result<Self, String> {
                 Ok(Self {
                     identity_id: value.identity_id?,
                     identity_type: value.identity_type?,
@@ -7176,7 +7494,7 @@ pub mod types {
 
         impl std::convert::TryFrom<OrganizationUpdate> for super::OrganizationUpdate {
             type Error = String;
-            fn try_from(value: OrganizationUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: OrganizationUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -7271,7 +7589,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Project> for super::Project {
             type Error = String;
-            fn try_from(value: Project) -> Result<Self, Self::Error> {
+            fn try_from(value: Project) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -7322,7 +7640,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ProjectCreate> for super::ProjectCreate {
             type Error = String;
-            fn try_from(value: ProjectCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: ProjectCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -7369,7 +7687,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ProjectResultsPage> for super::ProjectResultsPage {
             type Error = String;
-            fn try_from(value: ProjectResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: ProjectResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -7407,7 +7725,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ProjectRolePolicy> for super::ProjectRolePolicy {
             type Error = String;
-            fn try_from(value: ProjectRolePolicy) -> Result<Self, Self::Error> {
+            fn try_from(value: ProjectRolePolicy) -> Result<Self, String> {
                 Ok(Self {
                     role_assignments: value.role_assignments?,
                 })
@@ -7465,7 +7783,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ProjectRoleRoleAssignment> for super::ProjectRoleRoleAssignment {
             type Error = String;
-            fn try_from(value: ProjectRoleRoleAssignment) -> Result<Self, Self::Error> {
+            fn try_from(value: ProjectRoleRoleAssignment) -> Result<Self, String> {
                 Ok(Self {
                     identity_id: value.identity_id?,
                     identity_type: value.identity_type?,
@@ -7513,7 +7831,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ProjectUpdate> for super::ProjectUpdate {
             type Error = String;
-            fn try_from(value: ProjectUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: ProjectUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -7572,7 +7890,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Rack> for super::Rack {
             type Error = String;
-            fn try_from(value: Rack) -> Result<Self, Self::Error> {
+            fn try_from(value: Rack) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     time_created: value.time_created?,
@@ -7620,7 +7938,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RackResultsPage> for super::RackResultsPage {
             type Error = String;
-            fn try_from(value: RackResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: RackResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -7667,7 +7985,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Role> for super::Role {
             type Error = String;
-            fn try_from(value: Role) -> Result<Self, Self::Error> {
+            fn try_from(value: Role) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -7714,7 +8032,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RoleResultsPage> for super::RoleResultsPage {
             type Error = String;
-            fn try_from(value: RoleResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: RoleResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -7845,7 +8163,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RouterRoute> for super::RouterRoute {
             type Error = String;
-            fn try_from(value: RouterRoute) -> Result<Self, Self::Error> {
+            fn try_from(value: RouterRoute) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     destination: value.destination?,
@@ -7923,7 +8241,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RouterRouteCreateParams> for super::RouterRouteCreateParams {
             type Error = String;
-            fn try_from(value: RouterRouteCreateParams) -> Result<Self, Self::Error> {
+            fn try_from(value: RouterRouteCreateParams) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     destination: value.destination?,
@@ -7972,7 +8290,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RouterRouteResultsPage> for super::RouterRouteResultsPage {
             type Error = String;
-            fn try_from(value: RouterRouteResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: RouterRouteResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -8043,7 +8361,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RouterRouteUpdateParams> for super::RouterRouteUpdateParams {
             type Error = String;
-            fn try_from(value: RouterRouteUpdateParams) -> Result<Self, Self::Error> {
+            fn try_from(value: RouterRouteUpdateParams) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     destination: value.destination?,
@@ -8092,7 +8410,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Saga> for super::Saga {
             type Error = String;
-            fn try_from(value: Saga) -> Result<Self, Self::Error> {
+            fn try_from(value: Saga) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     state: value.state?,
@@ -8139,7 +8457,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SagaResultsPage> for super::SagaResultsPage {
             type Error = String;
-            fn try_from(value: SagaResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: SagaResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -8299,7 +8617,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SamlIdentityProvider> for super::SamlIdentityProvider {
             type Error = String;
-            fn try_from(value: SamlIdentityProvider) -> Result<Self, Self::Error> {
+            fn try_from(value: SamlIdentityProvider) -> Result<Self, String> {
                 Ok(Self {
                     acs_url: value.acs_url?,
                     description: value.description?,
@@ -8449,7 +8767,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SamlIdentityProviderCreate> for super::SamlIdentityProviderCreate {
             type Error = String;
-            fn try_from(value: SamlIdentityProviderCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: SamlIdentityProviderCreate) -> Result<Self, String> {
                 Ok(Self {
                     acs_url: value.acs_url?,
                     description: value.description?,
@@ -8568,7 +8886,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Silo> for super::Silo {
             type Error = String;
-            fn try_from(value: Silo) -> Result<Self, Self::Error> {
+            fn try_from(value: Silo) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     discoverable: value.discoverable?,
@@ -8649,7 +8967,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SiloCreate> for super::SiloCreate {
             type Error = String;
-            fn try_from(value: SiloCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: SiloCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     discoverable: value.discoverable?,
@@ -8698,7 +9016,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SiloResultsPage> for super::SiloResultsPage {
             type Error = String;
-            fn try_from(value: SiloResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: SiloResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -8736,7 +9054,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SiloRolePolicy> for super::SiloRolePolicy {
             type Error = String;
-            fn try_from(value: SiloRolePolicy) -> Result<Self, Self::Error> {
+            fn try_from(value: SiloRolePolicy) -> Result<Self, String> {
                 Ok(Self {
                     role_assignments: value.role_assignments?,
                 })
@@ -8794,7 +9112,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SiloRoleRoleAssignment> for super::SiloRoleRoleAssignment {
             type Error = String;
-            fn try_from(value: SiloRoleRoleAssignment) -> Result<Self, Self::Error> {
+            fn try_from(value: SiloRoleRoleAssignment) -> Result<Self, String> {
                 Ok(Self {
                     identity_id: value.identity_id?,
                     identity_type: value.identity_type?,
@@ -8866,7 +9184,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Sled> for super::Sled {
             type Error = String;
-            fn try_from(value: Sled) -> Result<Self, Self::Error> {
+            fn try_from(value: Sled) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     service_address: value.service_address?,
@@ -8915,7 +9233,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SledResultsPage> for super::SledResultsPage {
             type Error = String;
-            fn try_from(value: SledResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: SledResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9034,7 +9352,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Snapshot> for super::Snapshot {
             type Error = String;
-            fn try_from(value: Snapshot) -> Result<Self, Self::Error> {
+            fn try_from(value: Snapshot) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     disk_id: value.disk_id?,
@@ -9099,7 +9417,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SnapshotCreate> for super::SnapshotCreate {
             type Error = String;
-            fn try_from(value: SnapshotCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: SnapshotCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     disk: value.disk?,
@@ -9147,7 +9465,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SnapshotResultsPage> for super::SnapshotResultsPage {
             type Error = String;
-            fn try_from(value: SnapshotResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: SnapshotResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9182,7 +9500,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SpoofLoginBody> for super::SpoofLoginBody {
             type Error = String;
-            fn try_from(value: SpoofLoginBody) -> Result<Self, Self::Error> {
+            fn try_from(value: SpoofLoginBody) -> Result<Self, String> {
                 Ok(Self {
                     username: value.username?,
                 })
@@ -9288,7 +9606,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SshKey> for super::SshKey {
             type Error = String;
-            fn try_from(value: SshKey) -> Result<Self, Self::Error> {
+            fn try_from(value: SshKey) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -9352,7 +9670,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SshKeyCreate> for super::SshKeyCreate {
             type Error = String;
-            fn try_from(value: SshKeyCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: SshKeyCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -9400,7 +9718,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SshKeyResultsPage> for super::SshKeyResultsPage {
             type Error = String;
-            fn try_from(value: SshKeyResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: SshKeyResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9471,7 +9789,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TimeseriesSchema> for super::TimeseriesSchema {
             type Error = String;
-            fn try_from(value: TimeseriesSchema) -> Result<Self, Self::Error> {
+            fn try_from(value: TimeseriesSchema) -> Result<Self, String> {
                 Ok(Self {
                     created: value.created?,
                     datum_type: value.datum_type?,
@@ -9520,7 +9838,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TimeseriesSchemaResultsPage> for super::TimeseriesSchemaResultsPage {
             type Error = String;
-            fn try_from(value: TimeseriesSchemaResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: TimeseriesSchemaResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9567,7 +9885,7 @@ pub mod types {
 
         impl std::convert::TryFrom<User> for super::User {
             type Error = String;
-            fn try_from(value: User) -> Result<Self, Self::Error> {
+            fn try_from(value: User) -> Result<Self, String> {
                 Ok(Self {
                     display_name: value.display_name?,
                     id: value.id?,
@@ -9650,7 +9968,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UserBuiltin> for super::UserBuiltin {
             type Error = String;
-            fn try_from(value: UserBuiltin) -> Result<Self, Self::Error> {
+            fn try_from(value: UserBuiltin) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -9700,7 +10018,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UserBuiltinResultsPage> for super::UserBuiltinResultsPage {
             type Error = String;
-            fn try_from(value: UserBuiltinResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: UserBuiltinResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9747,7 +10065,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UserResultsPage> for super::UserResultsPage {
             type Error = String;
-            fn try_from(value: UserResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: UserResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9881,7 +10199,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Vpc> for super::Vpc {
             type Error = String;
-            fn try_from(value: Vpc) -> Result<Self, Self::Error> {
+            fn try_from(value: Vpc) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     dns_name: value.dns_name?,
@@ -9959,7 +10277,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcCreate> for super::VpcCreate {
             type Error = String;
-            fn try_from(value: VpcCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     dns_name: value.dns_name?,
@@ -10128,7 +10446,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcFirewallRule> for super::VpcFirewallRule {
             type Error = String;
-            fn try_from(value: VpcFirewallRule) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcFirewallRule) -> Result<Self, String> {
                 Ok(Self {
                     action: value.action?,
                     description: value.description?,
@@ -10197,7 +10515,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcFirewallRuleFilter> for super::VpcFirewallRuleFilter {
             type Error = String;
-            fn try_from(value: VpcFirewallRuleFilter) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcFirewallRuleFilter) -> Result<Self, String> {
                 Ok(Self {
                     hosts: value.hosts?,
                     ports: value.ports?,
@@ -10317,7 +10635,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcFirewallRuleUpdate> for super::VpcFirewallRuleUpdate {
             type Error = String;
-            fn try_from(value: VpcFirewallRuleUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcFirewallRuleUpdate) -> Result<Self, String> {
                 Ok(Self {
                     action: value.action?,
                     description: value.description?,
@@ -10358,7 +10676,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcFirewallRuleUpdateParams> for super::VpcFirewallRuleUpdateParams {
             type Error = String;
-            fn try_from(value: VpcFirewallRuleUpdateParams) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcFirewallRuleUpdateParams) -> Result<Self, String> {
                 Ok(Self {
                     rules: value.rules?,
                 })
@@ -10392,7 +10710,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcFirewallRules> for super::VpcFirewallRules {
             type Error = String;
-            fn try_from(value: VpcFirewallRules) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcFirewallRules) -> Result<Self, String> {
                 Ok(Self {
                     rules: value.rules?,
                 })
@@ -10438,7 +10756,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcResultsPage> for super::VpcResultsPage {
             type Error = String;
-            fn try_from(value: VpcResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -10545,7 +10863,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcRouter> for super::VpcRouter {
             type Error = String;
-            fn try_from(value: VpcRouter) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcRouter) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -10597,7 +10915,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcRouterCreate> for super::VpcRouterCreate {
             type Error = String;
-            fn try_from(value: VpcRouterCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcRouterCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -10644,7 +10962,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcRouterResultsPage> for super::VpcRouterResultsPage {
             type Error = String;
-            fn try_from(value: VpcRouterResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcRouterResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -10691,7 +11009,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcRouterUpdate> for super::VpcRouterUpdate {
             type Error = String;
-            fn try_from(value: VpcRouterUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcRouterUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -10810,7 +11128,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcSubnet> for super::VpcSubnet {
             type Error = String;
-            fn try_from(value: VpcSubnet) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcSubnet) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -10887,7 +11205,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcSubnetCreate> for super::VpcSubnetCreate {
             type Error = String;
-            fn try_from(value: VpcSubnetCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcSubnetCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     ipv4_block: value.ipv4_block?,
@@ -10936,7 +11254,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcSubnetResultsPage> for super::VpcSubnetResultsPage {
             type Error = String;
-            fn try_from(value: VpcSubnetResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcSubnetResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -10983,7 +11301,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcSubnetUpdate> for super::VpcSubnetUpdate {
             type Error = String;
-            fn try_from(value: VpcSubnetUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcSubnetUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -11042,7 +11360,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcUpdate> for super::VpcUpdate {
             type Error = String;
-            fn try_from(value: VpcUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     dns_name: value.dns_name?,
diff --git a/progenitor-impl/tests/output/nexus-builder.out b/progenitor-impl/tests/output/nexus-builder.out
index 6c0501d..7a16d8e 100644
--- a/progenitor-impl/tests/output/nexus-builder.out
+++ b/progenitor-impl/tests/output/nexus-builder.out
@@ -81,14 +81,14 @@ pub mod types {
     pub struct BlockSize(i64);
     impl std::ops::Deref for BlockSize {
         type Target = i64;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &i64 {
             &self.0
         }
     }
 
     impl std::convert::TryFrom<i64> for BlockSize {
         type Error = &'static str;
-        fn try_from(value: i64) -> Result<Self, Self::Error> {
+        fn try_from(value: i64) -> Result<Self, &'static str> {
             if ![512_i64, 2048_i64, 4096_i64].contains(&value) {
                 Err("invalid value")
             } else {
@@ -108,7 +108,7 @@ pub mod types {
     pub struct ByteCount(pub u64);
     impl std::ops::Deref for ByteCount {
         type Target = u64;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &u64 {
             &self.0
         }
     }
@@ -206,7 +206,7 @@ pub mod types {
 
     impl std::str::FromStr for DatumType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "bool" => Ok(Self::Bool),
                 "i64" => Ok(Self::I64),
@@ -222,6 +222,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for DatumType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for DatumType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct DerEncodedKeyPair {
         ///request signing private key (base64 encoded der file)
@@ -372,7 +386,7 @@ pub mod types {
 
     impl std::str::FromStr for DiskMetricName {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "activated" => Ok(Self::Activated),
                 "flush" => Ok(Self::Flush),
@@ -385,6 +399,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for DiskMetricName {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for DiskMetricName {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct DiskResultsPage {
@@ -554,7 +582,7 @@ pub mod types {
 
     impl std::str::FromStr for FieldSource {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "target" => Ok(Self::Target),
                 "metric" => Ok(Self::Metric),
@@ -563,6 +591,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for FieldSource {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for FieldSource {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The `FieldType` identifies the data type of a target or metric field.
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
@@ -594,7 +636,7 @@ pub mod types {
 
     impl std::str::FromStr for FieldType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "string" => Ok(Self::String),
                 "i64" => Ok(Self::I64),
@@ -606,6 +648,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for FieldType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for FieldType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
     )]
@@ -630,7 +686,7 @@ pub mod types {
 
     impl std::str::FromStr for FleetRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -640,6 +696,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for FleetRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for FleetRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -879,7 +949,7 @@ pub mod types {
 
     impl std::str::FromStr for IdSortMode {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "id_ascending" => Ok(Self::IdAscending),
                 _ => Err("invalid value"),
@@ -887,6 +957,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of an [`IdentityProvider`]
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct IdentityProvider {
@@ -944,7 +1028,7 @@ pub mod types {
 
     impl std::str::FromStr for IdentityProviderType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "saml" => Ok(Self::Saml),
                 _ => Err("invalid value"),
@@ -952,6 +1036,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IdentityProviderType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IdentityProviderType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Describes what kind of identity is described by an id
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
@@ -971,7 +1069,7 @@ pub mod types {
 
     impl std::str::FromStr for IdentityType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "silo_user" => Ok(Self::SiloUser),
                 _ => Err("invalid value"),
@@ -979,6 +1077,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IdentityType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IdentityType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     #[serde(tag = "type")]
     pub enum IdpMetadataSource {
@@ -1106,7 +1218,7 @@ pub mod types {
     pub struct InstanceCpuCount(pub u16);
     impl std::ops::Deref for InstanceCpuCount {
         type Target = u16;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &u16 {
             &self.0
         }
     }
@@ -1282,7 +1394,7 @@ pub mod types {
 
     impl std::str::FromStr for InstanceState {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "creating" => Ok(Self::Creating),
                 "starting" => Ok(Self::Starting),
@@ -1299,6 +1411,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The kind of an external IP address for an instance
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
@@ -1321,7 +1447,7 @@ pub mod types {
 
     impl std::str::FromStr for IpKind {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "ephemeral" => Ok(Self::Ephemeral),
                 "floating" => Ok(Self::Floating),
@@ -1330,6 +1456,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IpKind {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IpKind {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     #[serde(untagged)]
     pub enum IpNet {
@@ -1337,27 +1477,30 @@ pub mod types {
         V6(Ipv6Net),
     }
 
+    impl std::str::FromStr for IpNet {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
+            if let Ok(v) = value.parse() {
+                Ok(Self::V4(v))
+            } else if let Ok(v) = value.parse() {
+                Ok(Self::V6(v))
+            } else {
+                Err("string conversion failed for all variants")
+            }
+        }
+    }
+
     impl std::convert::TryFrom<&str> for IpNet {
         type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
-            Err("")
-                .or_else(|_: Self::Error| Ok(Self::V4(Ipv4Net::try_from(value)?)))
-                .or_else(|_: Self::Error| Ok(Self::V6(Ipv6Net::try_from(value)?)))
-                .map_err(|_: Self::Error| "string conversion failed for all variants")
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
     impl std::convert::TryFrom<&String> for IpNet {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
-        }
-    }
-
-    impl std::convert::TryFrom<String> for IpNet {
-        type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1485,30 +1628,30 @@ pub mod types {
     pub struct Ipv4Net(String);
     impl std::ops::Deref for Ipv4Net {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for Ipv4Net {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for Ipv4Net {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if regress :: Regex :: new ("^(10\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/([8-9]|1[0-9]|2[0-9]|3[0-2])|172\\.(1[6-9]|2[0-9]|3[0-1])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[2-9]|2[0-9]|3[0-2])|192\\.168\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[6-9]|2[0-9]|3[0-2]))$") . unwrap () . find (value) . is_none () { return Err ("doesn't match pattern \"^(10\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/([8-9]|1[0-9]|2[0-9]|3[0-2])|172\\.(1[6-9]|2[0-9]|3[0-1])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[2-9]|2[0-9]|3[0-2])|192\\.168\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[6-9]|2[0-9]|3[0-2]))$\"") ; }
             Ok(Self(value.to_string()))
         }
     }
 
-    impl std::convert::TryFrom<&String> for Ipv4Net {
+    impl std::convert::TryFrom<&str> for Ipv4Net {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for Ipv4Net {
+    impl std::convert::TryFrom<&String> for Ipv4Net {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1517,8 +1660,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1542,30 +1686,30 @@ pub mod types {
     pub struct Ipv6Net(String);
     impl std::ops::Deref for Ipv6Net {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for Ipv6Net {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for Ipv6Net {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if regress :: Regex :: new ("^([fF][dD])[0-9a-fA-F]{2}:(([0-9a-fA-F]{1,4}:){6}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,6}:)\\/([1-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8])$") . unwrap () . find (value) . is_none () { return Err ("doesn't match pattern \"^([fF][dD])[0-9a-fA-F]{2}:(([0-9a-fA-F]{1,4}:){6}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,6}:)\\/([1-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8])$\"") ; }
             Ok(Self(value.to_string()))
         }
     }
 
-    impl std::convert::TryFrom<&String> for Ipv6Net {
+    impl std::convert::TryFrom<&str> for Ipv6Net {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for Ipv6Net {
+    impl std::convert::TryFrom<&String> for Ipv6Net {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1574,8 +1718,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1600,14 +1745,14 @@ pub mod types {
     pub struct L4PortRange(String);
     impl std::ops::Deref for L4PortRange {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for L4PortRange {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for L4PortRange {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 11usize {
                 return Err("longer than 11 characters");
             }
@@ -1625,17 +1770,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for L4PortRange {
+    impl std::convert::TryFrom<&str> for L4PortRange {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for L4PortRange {
+    impl std::convert::TryFrom<&String> for L4PortRange {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1644,8 +1789,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1654,14 +1800,14 @@ pub mod types {
     pub struct MacAddr(String);
     impl std::ops::Deref for MacAddr {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for MacAddr {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for MacAddr {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 17usize {
                 return Err("longer than 17 characters");
             }
@@ -1679,17 +1825,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for MacAddr {
+    impl std::convert::TryFrom<&str> for MacAddr {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for MacAddr {
+    impl std::convert::TryFrom<&String> for MacAddr {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1698,8 +1844,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1739,14 +1886,14 @@ pub mod types {
     pub struct Name(String);
     impl std::ops::Deref for Name {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for Name {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for Name {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 63usize {
                 return Err("longer than 63 characters");
             }
@@ -1755,17 +1902,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for Name {
+    impl std::convert::TryFrom<&str> for Name {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for Name {
+    impl std::convert::TryFrom<&String> for Name {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1774,8 +1921,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1804,7 +1952,7 @@ pub mod types {
 
     impl std::str::FromStr for NameOrIdSortMode {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "name_ascending" => Ok(Self::NameAscending),
                 "name_descending" => Ok(Self::NameDescending),
@@ -1814,6 +1962,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for NameOrIdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for NameOrIdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Supported set of sort modes for scanning by name only
     ///
     ///Currently, we only support scanning in ascending order.
@@ -1835,7 +1997,7 @@ pub mod types {
 
     impl std::str::FromStr for NameSortMode {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "name_ascending" => Ok(Self::NameAscending),
                 _ => Err("invalid value"),
@@ -1843,6 +2005,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for NameSortMode {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for NameSortMode {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `NetworkInterface` represents a virtual network interface device.
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct NetworkInterface {
@@ -2022,7 +2198,7 @@ pub mod types {
 
     impl std::str::FromStr for OrganizationRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -2032,6 +2208,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for OrganizationRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for OrganizationRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2161,7 +2351,7 @@ pub mod types {
 
     impl std::str::FromStr for ProjectRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -2171,6 +2361,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for ProjectRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for ProjectRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2275,14 +2479,14 @@ pub mod types {
     pub struct RoleName(String);
     impl std::ops::Deref for RoleName {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for RoleName {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for RoleName {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 63usize {
                 return Err("longer than 63 characters");
             }
@@ -2297,17 +2501,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for RoleName {
+    impl std::convert::TryFrom<&str> for RoleName {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for RoleName {
+    impl std::convert::TryFrom<&String> for RoleName {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -2316,8 +2520,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -2457,7 +2662,7 @@ pub mod types {
 
     impl std::str::FromStr for RouterRouteKind {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "default" => Ok(Self::Default),
                 "vpc_subnet" => Ok(Self::VpcSubnet),
@@ -2468,6 +2673,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for RouterRouteKind {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for RouterRouteKind {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct RouterRouteResultsPage {
@@ -2703,7 +2922,7 @@ pub mod types {
 
     impl std::str::FromStr for SiloRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -2713,6 +2932,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for SiloRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for SiloRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2915,14 +3148,14 @@ pub mod types {
     pub struct TimeseriesName(String);
     impl std::ops::Deref for TimeseriesName {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for TimeseriesName {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for TimeseriesName {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if regress::Regex::new(
                 "(([a-z]+[a-z0-9]*)(_([a-z0-9]+))*):(([a-z]+[a-z0-9]*)(_([a-z0-9]+))*)",
             )
@@ -2936,17 +3169,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for TimeseriesName {
+    impl std::convert::TryFrom<&str> for TimeseriesName {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for TimeseriesName {
+    impl std::convert::TryFrom<&String> for TimeseriesName {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -2955,8 +3188,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -3067,7 +3301,7 @@ pub mod types {
 
     impl std::str::FromStr for UserProvisionType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "fixed" => Ok(Self::Fixed),
                 "jit" => Ok(Self::Jit),
@@ -3076,6 +3310,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for UserProvisionType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for UserProvisionType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct UserResultsPage {
@@ -3199,7 +3447,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleAction {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "allow" => Ok(Self::Allow),
                 "deny" => Ok(Self::Deny),
@@ -3208,6 +3456,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleAction {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleAction {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
     )]
@@ -3229,7 +3491,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleDirection {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "inbound" => Ok(Self::Inbound),
                 "outbound" => Ok(Self::Outbound),
@@ -3238,6 +3500,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleDirection {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleDirection {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Filter for a firewall rule. A given packet must match every field that
     /// is present for the rule to apply to it. A packet matches a field if any
     /// entry in that field matches the packet.
@@ -3308,7 +3584,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleProtocol {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "TCP" => Ok(Self::Tcp),
                 "UDP" => Ok(Self::Udp),
@@ -3318,6 +3594,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleProtocol {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleProtocol {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
     )]
@@ -3339,7 +3629,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleStatus {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "disabled" => Ok(Self::Disabled),
                 "enabled" => Ok(Self::Enabled),
@@ -3348,6 +3638,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleStatus {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleStatus {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `VpcFirewallRuleTarget` is used to specify the set of [`Instance`]s to
     /// which a firewall rule applies.
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
@@ -3499,7 +3803,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcRouterKind {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "system" => Ok(Self::System),
                 "custom" => Ok(Self::Custom),
@@ -3508,6 +3812,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcRouterKind {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcRouterKind {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct VpcRouterResultsPage {
@@ -3685,7 +4003,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Bindouble> for super::Bindouble {
             type Error = String;
-            fn try_from(value: Bindouble) -> Result<Self, Self::Error> {
+            fn try_from(value: Bindouble) -> Result<Self, String> {
                 Ok(Self {
                     count: value.count?,
                     range: value.range?,
@@ -3732,7 +4050,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Binint64> for super::Binint64 {
             type Error = String;
-            fn try_from(value: Binint64) -> Result<Self, Self::Error> {
+            fn try_from(value: Binint64) -> Result<Self, String> {
                 Ok(Self {
                     count: value.count?,
                     range: value.range?,
@@ -3779,7 +4097,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Cumulativedouble> for super::Cumulativedouble {
             type Error = String;
-            fn try_from(value: Cumulativedouble) -> Result<Self, Self::Error> {
+            fn try_from(value: Cumulativedouble) -> Result<Self, String> {
                 Ok(Self {
                     start_time: value.start_time?,
                     value: value.value?,
@@ -3826,7 +4144,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Cumulativeint64> for super::Cumulativeint64 {
             type Error = String;
-            fn try_from(value: Cumulativeint64) -> Result<Self, Self::Error> {
+            fn try_from(value: Cumulativeint64) -> Result<Self, String> {
                 Ok(Self {
                     start_time: value.start_time?,
                     value: value.value?,
@@ -3873,7 +4191,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DerEncodedKeyPair> for super::DerEncodedKeyPair {
             type Error = String;
-            fn try_from(value: DerEncodedKeyPair) -> Result<Self, Self::Error> {
+            fn try_from(value: DerEncodedKeyPair) -> Result<Self, String> {
                 Ok(Self {
                     private_key: value.private_key?,
                     public_cert: value.public_cert?,
@@ -3932,7 +4250,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DeviceAccessTokenRequest> for super::DeviceAccessTokenRequest {
             type Error = String;
-            fn try_from(value: DeviceAccessTokenRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: DeviceAccessTokenRequest) -> Result<Self, String> {
                 Ok(Self {
                     client_id: value.client_id?,
                     device_code: value.device_code?,
@@ -3968,7 +4286,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DeviceAuthRequest> for super::DeviceAuthRequest {
             type Error = String;
-            fn try_from(value: DeviceAuthRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: DeviceAuthRequest) -> Result<Self, String> {
                 Ok(Self {
                     client_id: value.client_id?,
                 })
@@ -4002,7 +4320,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DeviceAuthVerify> for super::DeviceAuthVerify {
             type Error = String;
-            fn try_from(value: DeviceAuthVerify) -> Result<Self, Self::Error> {
+            fn try_from(value: DeviceAuthVerify) -> Result<Self, String> {
                 Ok(Self {
                     user_code: value.user_code?,
                 })
@@ -4168,7 +4486,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Disk> for super::Disk {
             type Error = String;
-            fn try_from(value: Disk) -> Result<Self, Self::Error> {
+            fn try_from(value: Disk) -> Result<Self, String> {
                 Ok(Self {
                     block_size: value.block_size?,
                     description: value.description?,
@@ -4249,7 +4567,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DiskCreate> for super::DiskCreate {
             type Error = String;
-            fn try_from(value: DiskCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: DiskCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     disk_source: value.disk_source?,
@@ -4286,7 +4604,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DiskIdentifier> for super::DiskIdentifier {
             type Error = String;
-            fn try_from(value: DiskIdentifier) -> Result<Self, Self::Error> {
+            fn try_from(value: DiskIdentifier) -> Result<Self, String> {
                 Ok(Self { name: value.name? })
             }
         }
@@ -4330,7 +4648,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DiskResultsPage> for super::DiskResultsPage {
             type Error = String;
-            fn try_from(value: DiskResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: DiskResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -4377,7 +4695,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Distribution> for super::Distribution {
             type Error = String;
-            fn try_from(value: Distribution) -> Result<Self, Self::Error> {
+            fn try_from(value: Distribution) -> Result<Self, String> {
                 Ok(Self {
                     name: value.name?,
                     version: value.version?,
@@ -4436,7 +4754,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Error> for super::Error {
             type Error = String;
-            fn try_from(value: Error) -> Result<Self, Self::Error> {
+            fn try_from(value: Error) -> Result<Self, String> {
                 Ok(Self {
                     error_code: value.error_code?,
                     message: value.message?,
@@ -4484,7 +4802,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ExternalIp> for super::ExternalIp {
             type Error = String;
-            fn try_from(value: ExternalIp) -> Result<Self, Self::Error> {
+            fn try_from(value: ExternalIp) -> Result<Self, String> {
                 Ok(Self {
                     ip: value.ip?,
                     kind: value.kind?,
@@ -4531,7 +4849,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ExternalIpResultsPage> for super::ExternalIpResultsPage {
             type Error = String;
-            fn try_from(value: ExternalIpResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: ExternalIpResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -4590,7 +4908,7 @@ pub mod types {
 
         impl std::convert::TryFrom<FieldSchema> for super::FieldSchema {
             type Error = String;
-            fn try_from(value: FieldSchema) -> Result<Self, Self::Error> {
+            fn try_from(value: FieldSchema) -> Result<Self, String> {
                 Ok(Self {
                     name: value.name?,
                     source: value.source?,
@@ -4629,7 +4947,7 @@ pub mod types {
 
         impl std::convert::TryFrom<FleetRolePolicy> for super::FleetRolePolicy {
             type Error = String;
-            fn try_from(value: FleetRolePolicy) -> Result<Self, Self::Error> {
+            fn try_from(value: FleetRolePolicy) -> Result<Self, String> {
                 Ok(Self {
                     role_assignments: value.role_assignments?,
                 })
@@ -4687,7 +5005,7 @@ pub mod types {
 
         impl std::convert::TryFrom<FleetRoleRoleAssignment> for super::FleetRoleRoleAssignment {
             type Error = String;
-            fn try_from(value: FleetRoleRoleAssignment) -> Result<Self, Self::Error> {
+            fn try_from(value: FleetRoleRoleAssignment) -> Result<Self, String> {
                 Ok(Self {
                     identity_id: value.identity_id?,
                     identity_type: value.identity_type?,
@@ -4843,7 +5161,7 @@ pub mod types {
 
         impl std::convert::TryFrom<GlobalImage> for super::GlobalImage {
             type Error = String;
-            fn try_from(value: GlobalImage) -> Result<Self, Self::Error> {
+            fn try_from(value: GlobalImage) -> Result<Self, String> {
                 Ok(Self {
                     block_size: value.block_size?,
                     description: value.description?,
@@ -4935,7 +5253,7 @@ pub mod types {
 
         impl std::convert::TryFrom<GlobalImageCreate> for super::GlobalImageCreate {
             type Error = String;
-            fn try_from(value: GlobalImageCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: GlobalImageCreate) -> Result<Self, String> {
                 Ok(Self {
                     block_size: value.block_size?,
                     description: value.description?,
@@ -4985,7 +5303,7 @@ pub mod types {
 
         impl std::convert::TryFrom<GlobalImageResultsPage> for super::GlobalImageResultsPage {
             type Error = String;
-            fn try_from(value: GlobalImageResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: GlobalImageResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -5044,7 +5362,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Histogramdouble> for super::Histogramdouble {
             type Error = String;
-            fn try_from(value: Histogramdouble) -> Result<Self, Self::Error> {
+            fn try_from(value: Histogramdouble) -> Result<Self, String> {
                 Ok(Self {
                     bins: value.bins?,
                     n_samples: value.n_samples?,
@@ -5104,7 +5422,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Histogramint64> for super::Histogramint64 {
             type Error = String;
-            fn try_from(value: Histogramint64) -> Result<Self, Self::Error> {
+            fn try_from(value: Histogramint64) -> Result<Self, String> {
                 Ok(Self {
                     bins: value.bins?,
                     n_samples: value.n_samples?,
@@ -5200,7 +5518,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IdentityProvider> for super::IdentityProvider {
             type Error = String;
-            fn try_from(value: IdentityProvider) -> Result<Self, Self::Error> {
+            fn try_from(value: IdentityProvider) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -5251,7 +5569,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IdentityProviderResultsPage> for super::IdentityProviderResultsPage {
             type Error = String;
-            fn try_from(value: IdentityProviderResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: IdentityProviderResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -5406,7 +5724,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Image> for super::Image {
             type Error = String;
-            fn try_from(value: Image) -> Result<Self, Self::Error> {
+            fn try_from(value: Image) -> Result<Self, String> {
                 Ok(Self {
                     block_size: value.block_size?,
                     description: value.description?,
@@ -5486,7 +5804,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ImageCreate> for super::ImageCreate {
             type Error = String;
-            fn try_from(value: ImageCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: ImageCreate) -> Result<Self, String> {
                 Ok(Self {
                     block_size: value.block_size?,
                     description: value.description?,
@@ -5535,7 +5853,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ImageResultsPage> for super::ImageResultsPage {
             type Error = String;
-            fn try_from(value: ImageResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: ImageResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -5695,7 +6013,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Instance> for super::Instance {
             type Error = String;
-            fn try_from(value: Instance) -> Result<Self, Self::Error> {
+            fn try_from(value: Instance) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     hostname: value.hostname?,
@@ -5838,7 +6156,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceCreate> for super::InstanceCreate {
             type Error = String;
-            fn try_from(value: InstanceCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     disks: value.disks?,
@@ -5880,7 +6198,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceMigrate> for super::InstanceMigrate {
             type Error = String;
-            fn try_from(value: InstanceMigrate) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceMigrate) -> Result<Self, String> {
                 Ok(Self {
                     dst_sled_id: value.dst_sled_id?,
                 })
@@ -5926,7 +6244,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceResultsPage> for super::InstanceResultsPage {
             type Error = String;
-            fn try_from(value: InstanceResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -5976,7 +6294,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceSerialConsoleData> for super::InstanceSerialConsoleData {
             type Error = String;
-            fn try_from(value: InstanceSerialConsoleData) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceSerialConsoleData) -> Result<Self, String> {
                 Ok(Self {
                     data: value.data?,
                     last_byte_offset: value.last_byte_offset?,
@@ -6071,7 +6389,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPool> for super::IpPool {
             type Error = String;
-            fn try_from(value: IpPool) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPool) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -6146,7 +6464,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPoolCreate> for super::IpPoolCreate {
             type Error = String;
-            fn try_from(value: IpPoolCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPoolCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -6207,7 +6525,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPoolRange> for super::IpPoolRange {
             type Error = String;
-            fn try_from(value: IpPoolRange) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPoolRange) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     range: value.range?,
@@ -6255,7 +6573,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPoolRangeResultsPage> for super::IpPoolRangeResultsPage {
             type Error = String;
-            fn try_from(value: IpPoolRangeResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPoolRangeResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -6302,7 +6620,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPoolResultsPage> for super::IpPoolResultsPage {
             type Error = String;
-            fn try_from(value: IpPoolResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPoolResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -6349,7 +6667,7 @@ pub mod types {
 
         impl std::convert::TryFrom<IpPoolUpdate> for super::IpPoolUpdate {
             type Error = String;
-            fn try_from(value: IpPoolUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: IpPoolUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -6396,7 +6714,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Ipv4Range> for super::Ipv4Range {
             type Error = String;
-            fn try_from(value: Ipv4Range) -> Result<Self, Self::Error> {
+            fn try_from(value: Ipv4Range) -> Result<Self, String> {
                 Ok(Self {
                     first: value.first?,
                     last: value.last?,
@@ -6443,7 +6761,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Ipv6Range> for super::Ipv6Range {
             type Error = String;
-            fn try_from(value: Ipv6Range) -> Result<Self, Self::Error> {
+            fn try_from(value: Ipv6Range) -> Result<Self, String> {
                 Ok(Self {
                     first: value.first?,
                     last: value.last?,
@@ -6490,7 +6808,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Measurement> for super::Measurement {
             type Error = String;
-            fn try_from(value: Measurement) -> Result<Self, Self::Error> {
+            fn try_from(value: Measurement) -> Result<Self, String> {
                 Ok(Self {
                     datum: value.datum?,
                     timestamp: value.timestamp?,
@@ -6537,7 +6855,7 @@ pub mod types {
 
         impl std::convert::TryFrom<MeasurementResultsPage> for super::MeasurementResultsPage {
             type Error = String;
-            fn try_from(value: MeasurementResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: MeasurementResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -6692,7 +7010,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterface> for super::NetworkInterface {
             type Error = String;
-            fn try_from(value: NetworkInterface) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterface) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -6784,7 +7102,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterfaceCreate> for super::NetworkInterfaceCreate {
             type Error = String;
-            fn try_from(value: NetworkInterfaceCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterfaceCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     ip: value.ip?,
@@ -6834,7 +7152,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterfaceResultsPage> for super::NetworkInterfaceResultsPage {
             type Error = String;
-            fn try_from(value: NetworkInterfaceResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterfaceResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -6893,7 +7211,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterfaceUpdate> for super::NetworkInterfaceUpdate {
             type Error = String;
-            fn try_from(value: NetworkInterfaceUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterfaceUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     make_primary: value.make_primary?,
@@ -6977,7 +7295,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Organization> for super::Organization {
             type Error = String;
-            fn try_from(value: Organization) -> Result<Self, Self::Error> {
+            fn try_from(value: Organization) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -7027,7 +7345,7 @@ pub mod types {
 
         impl std::convert::TryFrom<OrganizationCreate> for super::OrganizationCreate {
             type Error = String;
-            fn try_from(value: OrganizationCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: OrganizationCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -7074,7 +7392,7 @@ pub mod types {
 
         impl std::convert::TryFrom<OrganizationResultsPage> for super::OrganizationResultsPage {
             type Error = String;
-            fn try_from(value: OrganizationResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: OrganizationResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -7112,7 +7430,7 @@ pub mod types {
 
         impl std::convert::TryFrom<OrganizationRolePolicy> for super::OrganizationRolePolicy {
             type Error = String;
-            fn try_from(value: OrganizationRolePolicy) -> Result<Self, Self::Error> {
+            fn try_from(value: OrganizationRolePolicy) -> Result<Self, String> {
                 Ok(Self {
                     role_assignments: value.role_assignments?,
                 })
@@ -7172,7 +7490,7 @@ pub mod types {
             for super::OrganizationRoleRoleAssignment
         {
             type Error = String;
-            fn try_from(value: OrganizationRoleRoleAssignment) -> Result<Self, Self::Error> {
+            fn try_from(value: OrganizationRoleRoleAssignment) -> Result<Self, String> {
                 Ok(Self {
                     identity_id: value.identity_id?,
                     identity_type: value.identity_type?,
@@ -7220,7 +7538,7 @@ pub mod types {
 
         impl std::convert::TryFrom<OrganizationUpdate> for super::OrganizationUpdate {
             type Error = String;
-            fn try_from(value: OrganizationUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: OrganizationUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -7315,7 +7633,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Project> for super::Project {
             type Error = String;
-            fn try_from(value: Project) -> Result<Self, Self::Error> {
+            fn try_from(value: Project) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -7366,7 +7684,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ProjectCreate> for super::ProjectCreate {
             type Error = String;
-            fn try_from(value: ProjectCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: ProjectCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -7413,7 +7731,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ProjectResultsPage> for super::ProjectResultsPage {
             type Error = String;
-            fn try_from(value: ProjectResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: ProjectResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -7451,7 +7769,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ProjectRolePolicy> for super::ProjectRolePolicy {
             type Error = String;
-            fn try_from(value: ProjectRolePolicy) -> Result<Self, Self::Error> {
+            fn try_from(value: ProjectRolePolicy) -> Result<Self, String> {
                 Ok(Self {
                     role_assignments: value.role_assignments?,
                 })
@@ -7509,7 +7827,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ProjectRoleRoleAssignment> for super::ProjectRoleRoleAssignment {
             type Error = String;
-            fn try_from(value: ProjectRoleRoleAssignment) -> Result<Self, Self::Error> {
+            fn try_from(value: ProjectRoleRoleAssignment) -> Result<Self, String> {
                 Ok(Self {
                     identity_id: value.identity_id?,
                     identity_type: value.identity_type?,
@@ -7557,7 +7875,7 @@ pub mod types {
 
         impl std::convert::TryFrom<ProjectUpdate> for super::ProjectUpdate {
             type Error = String;
-            fn try_from(value: ProjectUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: ProjectUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -7616,7 +7934,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Rack> for super::Rack {
             type Error = String;
-            fn try_from(value: Rack) -> Result<Self, Self::Error> {
+            fn try_from(value: Rack) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     time_created: value.time_created?,
@@ -7664,7 +7982,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RackResultsPage> for super::RackResultsPage {
             type Error = String;
-            fn try_from(value: RackResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: RackResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -7711,7 +8029,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Role> for super::Role {
             type Error = String;
-            fn try_from(value: Role) -> Result<Self, Self::Error> {
+            fn try_from(value: Role) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -7758,7 +8076,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RoleResultsPage> for super::RoleResultsPage {
             type Error = String;
-            fn try_from(value: RoleResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: RoleResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -7889,7 +8207,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RouterRoute> for super::RouterRoute {
             type Error = String;
-            fn try_from(value: RouterRoute) -> Result<Self, Self::Error> {
+            fn try_from(value: RouterRoute) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     destination: value.destination?,
@@ -7967,7 +8285,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RouterRouteCreateParams> for super::RouterRouteCreateParams {
             type Error = String;
-            fn try_from(value: RouterRouteCreateParams) -> Result<Self, Self::Error> {
+            fn try_from(value: RouterRouteCreateParams) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     destination: value.destination?,
@@ -8016,7 +8334,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RouterRouteResultsPage> for super::RouterRouteResultsPage {
             type Error = String;
-            fn try_from(value: RouterRouteResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: RouterRouteResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -8087,7 +8405,7 @@ pub mod types {
 
         impl std::convert::TryFrom<RouterRouteUpdateParams> for super::RouterRouteUpdateParams {
             type Error = String;
-            fn try_from(value: RouterRouteUpdateParams) -> Result<Self, Self::Error> {
+            fn try_from(value: RouterRouteUpdateParams) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     destination: value.destination?,
@@ -8136,7 +8454,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Saga> for super::Saga {
             type Error = String;
-            fn try_from(value: Saga) -> Result<Self, Self::Error> {
+            fn try_from(value: Saga) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     state: value.state?,
@@ -8183,7 +8501,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SagaResultsPage> for super::SagaResultsPage {
             type Error = String;
-            fn try_from(value: SagaResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: SagaResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -8343,7 +8661,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SamlIdentityProvider> for super::SamlIdentityProvider {
             type Error = String;
-            fn try_from(value: SamlIdentityProvider) -> Result<Self, Self::Error> {
+            fn try_from(value: SamlIdentityProvider) -> Result<Self, String> {
                 Ok(Self {
                     acs_url: value.acs_url?,
                     description: value.description?,
@@ -8493,7 +8811,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SamlIdentityProviderCreate> for super::SamlIdentityProviderCreate {
             type Error = String;
-            fn try_from(value: SamlIdentityProviderCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: SamlIdentityProviderCreate) -> Result<Self, String> {
                 Ok(Self {
                     acs_url: value.acs_url?,
                     description: value.description?,
@@ -8612,7 +8930,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Silo> for super::Silo {
             type Error = String;
-            fn try_from(value: Silo) -> Result<Self, Self::Error> {
+            fn try_from(value: Silo) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     discoverable: value.discoverable?,
@@ -8693,7 +9011,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SiloCreate> for super::SiloCreate {
             type Error = String;
-            fn try_from(value: SiloCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: SiloCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     discoverable: value.discoverable?,
@@ -8742,7 +9060,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SiloResultsPage> for super::SiloResultsPage {
             type Error = String;
-            fn try_from(value: SiloResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: SiloResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -8780,7 +9098,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SiloRolePolicy> for super::SiloRolePolicy {
             type Error = String;
-            fn try_from(value: SiloRolePolicy) -> Result<Self, Self::Error> {
+            fn try_from(value: SiloRolePolicy) -> Result<Self, String> {
                 Ok(Self {
                     role_assignments: value.role_assignments?,
                 })
@@ -8838,7 +9156,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SiloRoleRoleAssignment> for super::SiloRoleRoleAssignment {
             type Error = String;
-            fn try_from(value: SiloRoleRoleAssignment) -> Result<Self, Self::Error> {
+            fn try_from(value: SiloRoleRoleAssignment) -> Result<Self, String> {
                 Ok(Self {
                     identity_id: value.identity_id?,
                     identity_type: value.identity_type?,
@@ -8910,7 +9228,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Sled> for super::Sled {
             type Error = String;
-            fn try_from(value: Sled) -> Result<Self, Self::Error> {
+            fn try_from(value: Sled) -> Result<Self, String> {
                 Ok(Self {
                     id: value.id?,
                     service_address: value.service_address?,
@@ -8959,7 +9277,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SledResultsPage> for super::SledResultsPage {
             type Error = String;
-            fn try_from(value: SledResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: SledResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9078,7 +9396,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Snapshot> for super::Snapshot {
             type Error = String;
-            fn try_from(value: Snapshot) -> Result<Self, Self::Error> {
+            fn try_from(value: Snapshot) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     disk_id: value.disk_id?,
@@ -9143,7 +9461,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SnapshotCreate> for super::SnapshotCreate {
             type Error = String;
-            fn try_from(value: SnapshotCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: SnapshotCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     disk: value.disk?,
@@ -9191,7 +9509,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SnapshotResultsPage> for super::SnapshotResultsPage {
             type Error = String;
-            fn try_from(value: SnapshotResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: SnapshotResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9226,7 +9544,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SpoofLoginBody> for super::SpoofLoginBody {
             type Error = String;
-            fn try_from(value: SpoofLoginBody) -> Result<Self, Self::Error> {
+            fn try_from(value: SpoofLoginBody) -> Result<Self, String> {
                 Ok(Self {
                     username: value.username?,
                 })
@@ -9332,7 +9650,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SshKey> for super::SshKey {
             type Error = String;
-            fn try_from(value: SshKey) -> Result<Self, Self::Error> {
+            fn try_from(value: SshKey) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -9396,7 +9714,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SshKeyCreate> for super::SshKeyCreate {
             type Error = String;
-            fn try_from(value: SshKeyCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: SshKeyCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -9444,7 +9762,7 @@ pub mod types {
 
         impl std::convert::TryFrom<SshKeyResultsPage> for super::SshKeyResultsPage {
             type Error = String;
-            fn try_from(value: SshKeyResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: SshKeyResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9515,7 +9833,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TimeseriesSchema> for super::TimeseriesSchema {
             type Error = String;
-            fn try_from(value: TimeseriesSchema) -> Result<Self, Self::Error> {
+            fn try_from(value: TimeseriesSchema) -> Result<Self, String> {
                 Ok(Self {
                     created: value.created?,
                     datum_type: value.datum_type?,
@@ -9564,7 +9882,7 @@ pub mod types {
 
         impl std::convert::TryFrom<TimeseriesSchemaResultsPage> for super::TimeseriesSchemaResultsPage {
             type Error = String;
-            fn try_from(value: TimeseriesSchemaResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: TimeseriesSchemaResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9611,7 +9929,7 @@ pub mod types {
 
         impl std::convert::TryFrom<User> for super::User {
             type Error = String;
-            fn try_from(value: User) -> Result<Self, Self::Error> {
+            fn try_from(value: User) -> Result<Self, String> {
                 Ok(Self {
                     display_name: value.display_name?,
                     id: value.id?,
@@ -9694,7 +10012,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UserBuiltin> for super::UserBuiltin {
             type Error = String;
-            fn try_from(value: UserBuiltin) -> Result<Self, Self::Error> {
+            fn try_from(value: UserBuiltin) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -9744,7 +10062,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UserBuiltinResultsPage> for super::UserBuiltinResultsPage {
             type Error = String;
-            fn try_from(value: UserBuiltinResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: UserBuiltinResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9791,7 +10109,7 @@ pub mod types {
 
         impl std::convert::TryFrom<UserResultsPage> for super::UserResultsPage {
             type Error = String;
-            fn try_from(value: UserResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: UserResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -9925,7 +10243,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Vpc> for super::Vpc {
             type Error = String;
-            fn try_from(value: Vpc) -> Result<Self, Self::Error> {
+            fn try_from(value: Vpc) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     dns_name: value.dns_name?,
@@ -10003,7 +10321,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcCreate> for super::VpcCreate {
             type Error = String;
-            fn try_from(value: VpcCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     dns_name: value.dns_name?,
@@ -10172,7 +10490,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcFirewallRule> for super::VpcFirewallRule {
             type Error = String;
-            fn try_from(value: VpcFirewallRule) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcFirewallRule) -> Result<Self, String> {
                 Ok(Self {
                     action: value.action?,
                     description: value.description?,
@@ -10241,7 +10559,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcFirewallRuleFilter> for super::VpcFirewallRuleFilter {
             type Error = String;
-            fn try_from(value: VpcFirewallRuleFilter) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcFirewallRuleFilter) -> Result<Self, String> {
                 Ok(Self {
                     hosts: value.hosts?,
                     ports: value.ports?,
@@ -10361,7 +10679,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcFirewallRuleUpdate> for super::VpcFirewallRuleUpdate {
             type Error = String;
-            fn try_from(value: VpcFirewallRuleUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcFirewallRuleUpdate) -> Result<Self, String> {
                 Ok(Self {
                     action: value.action?,
                     description: value.description?,
@@ -10402,7 +10720,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcFirewallRuleUpdateParams> for super::VpcFirewallRuleUpdateParams {
             type Error = String;
-            fn try_from(value: VpcFirewallRuleUpdateParams) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcFirewallRuleUpdateParams) -> Result<Self, String> {
                 Ok(Self {
                     rules: value.rules?,
                 })
@@ -10436,7 +10754,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcFirewallRules> for super::VpcFirewallRules {
             type Error = String;
-            fn try_from(value: VpcFirewallRules) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcFirewallRules) -> Result<Self, String> {
                 Ok(Self {
                     rules: value.rules?,
                 })
@@ -10482,7 +10800,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcResultsPage> for super::VpcResultsPage {
             type Error = String;
-            fn try_from(value: VpcResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -10589,7 +10907,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcRouter> for super::VpcRouter {
             type Error = String;
-            fn try_from(value: VpcRouter) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcRouter) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -10641,7 +10959,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcRouterCreate> for super::VpcRouterCreate {
             type Error = String;
-            fn try_from(value: VpcRouterCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcRouterCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -10688,7 +11006,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcRouterResultsPage> for super::VpcRouterResultsPage {
             type Error = String;
-            fn try_from(value: VpcRouterResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcRouterResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -10735,7 +11053,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcRouterUpdate> for super::VpcRouterUpdate {
             type Error = String;
-            fn try_from(value: VpcRouterUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcRouterUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -10854,7 +11172,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcSubnet> for super::VpcSubnet {
             type Error = String;
-            fn try_from(value: VpcSubnet) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcSubnet) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     id: value.id?,
@@ -10931,7 +11249,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcSubnetCreate> for super::VpcSubnetCreate {
             type Error = String;
-            fn try_from(value: VpcSubnetCreate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcSubnetCreate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     ipv4_block: value.ipv4_block?,
@@ -10980,7 +11298,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcSubnetResultsPage> for super::VpcSubnetResultsPage {
             type Error = String;
-            fn try_from(value: VpcSubnetResultsPage) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcSubnetResultsPage) -> Result<Self, String> {
                 Ok(Self {
                     items: value.items?,
                     next_page: value.next_page?,
@@ -11027,7 +11345,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcSubnetUpdate> for super::VpcSubnetUpdate {
             type Error = String;
-            fn try_from(value: VpcSubnetUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcSubnetUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     name: value.name?,
@@ -11086,7 +11404,7 @@ pub mod types {
 
         impl std::convert::TryFrom<VpcUpdate> for super::VpcUpdate {
             type Error = String;
-            fn try_from(value: VpcUpdate) -> Result<Self, Self::Error> {
+            fn try_from(value: VpcUpdate) -> Result<Self, String> {
                 Ok(Self {
                     description: value.description?,
                     dns_name: value.dns_name?,
diff --git a/progenitor-impl/tests/output/nexus-positional.out b/progenitor-impl/tests/output/nexus-positional.out
index b5c1780..c8b9312 100644
--- a/progenitor-impl/tests/output/nexus-positional.out
+++ b/progenitor-impl/tests/output/nexus-positional.out
@@ -69,14 +69,14 @@ pub mod types {
     pub struct BlockSize(i64);
     impl std::ops::Deref for BlockSize {
         type Target = i64;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &i64 {
             &self.0
         }
     }
 
     impl std::convert::TryFrom<i64> for BlockSize {
         type Error = &'static str;
-        fn try_from(value: i64) -> Result<Self, Self::Error> {
+        fn try_from(value: i64) -> Result<Self, &'static str> {
             if ![512_i64, 2048_i64, 4096_i64].contains(&value) {
                 Err("invalid value")
             } else {
@@ -96,7 +96,7 @@ pub mod types {
     pub struct ByteCount(pub u64);
     impl std::ops::Deref for ByteCount {
         type Target = u64;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &u64 {
             &self.0
         }
     }
@@ -180,7 +180,7 @@ pub mod types {
 
     impl std::str::FromStr for DatumType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "bool" => Ok(Self::Bool),
                 "i64" => Ok(Self::I64),
@@ -196,6 +196,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for DatumType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for DatumType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct DerEncodedKeyPair {
         ///request signing private key (base64 encoded der file)
@@ -302,7 +316,7 @@ pub mod types {
 
     impl std::str::FromStr for DiskMetricName {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "activated" => Ok(Self::Activated),
                 "flush" => Ok(Self::Flush),
@@ -315,6 +329,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for DiskMetricName {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for DiskMetricName {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct DiskResultsPage {
@@ -446,7 +474,7 @@ pub mod types {
 
     impl std::str::FromStr for FieldSource {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "target" => Ok(Self::Target),
                 "metric" => Ok(Self::Metric),
@@ -455,6 +483,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for FieldSource {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for FieldSource {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The `FieldType` identifies the data type of a target or metric field.
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum FieldType {
@@ -484,7 +526,7 @@ pub mod types {
 
     impl std::str::FromStr for FieldType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "string" => Ok(Self::String),
                 "i64" => Ok(Self::I64),
@@ -496,6 +538,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for FieldType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for FieldType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum FleetRole {
         #[serde(rename = "admin")]
@@ -518,7 +574,7 @@ pub mod types {
 
     impl std::str::FromStr for FleetRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -528,6 +584,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for FleetRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for FleetRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -723,7 +793,7 @@ pub mod types {
 
     impl std::str::FromStr for IdSortMode {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "id_ascending" => Ok(Self::IdAscending),
                 _ => Err("invalid value"),
@@ -731,6 +801,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of an [`IdentityProvider`]
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct IdentityProvider {
@@ -774,7 +858,7 @@ pub mod types {
 
     impl std::str::FromStr for IdentityProviderType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "saml" => Ok(Self::Saml),
                 _ => Err("invalid value"),
@@ -782,6 +866,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IdentityProviderType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IdentityProviderType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Describes what kind of identity is described by an id
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum IdentityType {
@@ -799,7 +897,7 @@ pub mod types {
 
     impl std::str::FromStr for IdentityType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "silo_user" => Ok(Self::SiloUser),
                 _ => Err("invalid value"),
@@ -807,6 +905,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IdentityType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IdentityType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     #[serde(tag = "type")]
     pub enum IdpMetadataSource {
@@ -910,7 +1022,7 @@ pub mod types {
     pub struct InstanceCpuCount(pub u16);
     impl std::ops::Deref for InstanceCpuCount {
         type Target = u16;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &u16 {
             &self.0
         }
     }
@@ -1060,7 +1172,7 @@ pub mod types {
 
     impl std::str::FromStr for InstanceState {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "creating" => Ok(Self::Creating),
                 "starting" => Ok(Self::Starting),
@@ -1077,6 +1189,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The kind of an external IP address for an instance
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum IpKind {
@@ -1097,7 +1223,7 @@ pub mod types {
 
     impl std::str::FromStr for IpKind {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "ephemeral" => Ok(Self::Ephemeral),
                 "floating" => Ok(Self::Floating),
@@ -1106,6 +1232,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for IpKind {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for IpKind {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     #[serde(untagged)]
     pub enum IpNet {
@@ -1113,27 +1253,30 @@ pub mod types {
         V6(Ipv6Net),
     }
 
+    impl std::str::FromStr for IpNet {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
+            if let Ok(v) = value.parse() {
+                Ok(Self::V4(v))
+            } else if let Ok(v) = value.parse() {
+                Ok(Self::V6(v))
+            } else {
+                Err("string conversion failed for all variants")
+            }
+        }
+    }
+
     impl std::convert::TryFrom<&str> for IpNet {
         type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
-            Err("")
-                .or_else(|_: Self::Error| Ok(Self::V4(Ipv4Net::try_from(value)?)))
-                .or_else(|_: Self::Error| Ok(Self::V6(Ipv6Net::try_from(value)?)))
-                .map_err(|_: Self::Error| "string conversion failed for all variants")
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
     impl std::convert::TryFrom<&String> for IpNet {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
-        }
-    }
-
-    impl std::convert::TryFrom<String> for IpNet {
-        type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1225,30 +1368,30 @@ pub mod types {
     pub struct Ipv4Net(String);
     impl std::ops::Deref for Ipv4Net {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for Ipv4Net {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for Ipv4Net {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if regress :: Regex :: new ("^(10\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/([8-9]|1[0-9]|2[0-9]|3[0-2])|172\\.(1[6-9]|2[0-9]|3[0-1])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[2-9]|2[0-9]|3[0-2])|192\\.168\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[6-9]|2[0-9]|3[0-2]))$") . unwrap () . find (value) . is_none () { return Err ("doesn't match pattern \"^(10\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/([8-9]|1[0-9]|2[0-9]|3[0-2])|172\\.(1[6-9]|2[0-9]|3[0-1])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[2-9]|2[0-9]|3[0-2])|192\\.168\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\/(1[6-9]|2[0-9]|3[0-2]))$\"") ; }
             Ok(Self(value.to_string()))
         }
     }
 
-    impl std::convert::TryFrom<&String> for Ipv4Net {
+    impl std::convert::TryFrom<&str> for Ipv4Net {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for Ipv4Net {
+    impl std::convert::TryFrom<&String> for Ipv4Net {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1257,8 +1400,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1276,30 +1420,30 @@ pub mod types {
     pub struct Ipv6Net(String);
     impl std::ops::Deref for Ipv6Net {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for Ipv6Net {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for Ipv6Net {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if regress :: Regex :: new ("^([fF][dD])[0-9a-fA-F]{2}:(([0-9a-fA-F]{1,4}:){6}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,6}:)\\/([1-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8])$") . unwrap () . find (value) . is_none () { return Err ("doesn't match pattern \"^([fF][dD])[0-9a-fA-F]{2}:(([0-9a-fA-F]{1,4}:){6}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,6}:)\\/([1-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8])$\"") ; }
             Ok(Self(value.to_string()))
         }
     }
 
-    impl std::convert::TryFrom<&String> for Ipv6Net {
+    impl std::convert::TryFrom<&str> for Ipv6Net {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for Ipv6Net {
+    impl std::convert::TryFrom<&String> for Ipv6Net {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1308,8 +1452,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1328,14 +1473,14 @@ pub mod types {
     pub struct L4PortRange(String);
     impl std::ops::Deref for L4PortRange {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for L4PortRange {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for L4PortRange {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 11usize {
                 return Err("longer than 11 characters");
             }
@@ -1353,17 +1498,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for L4PortRange {
+    impl std::convert::TryFrom<&str> for L4PortRange {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for L4PortRange {
+    impl std::convert::TryFrom<&String> for L4PortRange {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1372,8 +1517,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1382,14 +1528,14 @@ pub mod types {
     pub struct MacAddr(String);
     impl std::ops::Deref for MacAddr {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for MacAddr {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for MacAddr {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 17usize {
                 return Err("longer than 17 characters");
             }
@@ -1407,17 +1553,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for MacAddr {
+    impl std::convert::TryFrom<&str> for MacAddr {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for MacAddr {
+    impl std::convert::TryFrom<&String> for MacAddr {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1426,8 +1572,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1455,14 +1602,14 @@ pub mod types {
     pub struct Name(String);
     impl std::ops::Deref for Name {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for Name {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for Name {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 63usize {
                 return Err("longer than 63 characters");
             }
@@ -1471,17 +1618,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for Name {
+    impl std::convert::TryFrom<&str> for Name {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for Name {
+    impl std::convert::TryFrom<&String> for Name {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1490,8 +1637,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -1518,7 +1666,7 @@ pub mod types {
 
     impl std::str::FromStr for NameOrIdSortMode {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "name_ascending" => Ok(Self::NameAscending),
                 "name_descending" => Ok(Self::NameDescending),
@@ -1528,6 +1676,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for NameOrIdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for NameOrIdSortMode {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Supported set of sort modes for scanning by name only
     ///
     ///Currently, we only support scanning in ascending order.
@@ -1547,7 +1709,7 @@ pub mod types {
 
     impl std::str::FromStr for NameSortMode {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "name_ascending" => Ok(Self::NameAscending),
                 _ => Err("invalid value"),
@@ -1555,6 +1717,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for NameSortMode {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for NameSortMode {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `NetworkInterface` represents a virtual network interface device.
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct NetworkInterface {
@@ -1690,7 +1866,7 @@ pub mod types {
 
     impl std::str::FromStr for OrganizationRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -1700,6 +1876,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for OrganizationRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for OrganizationRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -1791,7 +1981,7 @@ pub mod types {
 
     impl std::str::FromStr for ProjectRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -1801,6 +1991,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for ProjectRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for ProjectRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -1869,14 +2073,14 @@ pub mod types {
     pub struct RoleName(String);
     impl std::ops::Deref for RoleName {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for RoleName {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for RoleName {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if value.len() > 63usize {
                 return Err("longer than 63 characters");
             }
@@ -1891,17 +2095,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for RoleName {
+    impl std::convert::TryFrom<&str> for RoleName {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for RoleName {
+    impl std::convert::TryFrom<&String> for RoleName {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -1910,8 +2114,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -2031,7 +2236,7 @@ pub mod types {
 
     impl std::str::FromStr for RouterRouteKind {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "default" => Ok(Self::Default),
                 "vpc_subnet" => Ok(Self::VpcSubnet),
@@ -2042,6 +2247,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for RouterRouteKind {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for RouterRouteKind {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct RouterRouteResultsPage {
@@ -2221,7 +2440,7 @@ pub mod types {
 
     impl std::str::FromStr for SiloRole {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "admin" => Ok(Self::Admin),
                 "collaborator" => Ok(Self::Collaborator),
@@ -2231,6 +2450,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for SiloRole {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for SiloRole {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2367,14 +2600,14 @@ pub mod types {
     pub struct TimeseriesName(String);
     impl std::ops::Deref for TimeseriesName {
         type Target = String;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &String {
             &self.0
         }
     }
 
-    impl std::convert::TryFrom<&str> for TimeseriesName {
-        type Error = &'static str;
-        fn try_from(value: &str) -> Result<Self, Self::Error> {
+    impl std::str::FromStr for TimeseriesName {
+        type Err = &'static str;
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             if regress::Regex::new(
                 "(([a-z]+[a-z0-9]*)(_([a-z0-9]+))*):(([a-z]+[a-z0-9]*)(_([a-z0-9]+))*)",
             )
@@ -2388,17 +2621,17 @@ pub mod types {
         }
     }
 
-    impl std::convert::TryFrom<&String> for TimeseriesName {
+    impl std::convert::TryFrom<&str> for TimeseriesName {
         type Error = &'static str;
-        fn try_from(value: &String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
-    impl std::convert::TryFrom<String> for TimeseriesName {
+    impl std::convert::TryFrom<&String> for TimeseriesName {
         type Error = &'static str;
-        fn try_from(value: String) -> Result<Self, Self::Error> {
-            Self::try_from(value.as_str())
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
         }
     }
 
@@ -2407,8 +2640,9 @@ pub mod types {
         where
             D: serde::Deserializer<'de>,
         {
-            Self::try_from(String::deserialize(deserializer)?)
-                .map_err(|e| <D::Error as serde::de::Error>::custom(e.to_string()))
+            String::deserialize(deserializer)?
+                .parse()
+                .map_err(|e: &'static str| <D::Error as serde::de::Error>::custom(e.to_string()))
         }
     }
 
@@ -2487,7 +2721,7 @@ pub mod types {
 
     impl std::str::FromStr for UserProvisionType {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "fixed" => Ok(Self::Fixed),
                 "jit" => Ok(Self::Jit),
@@ -2496,6 +2730,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for UserProvisionType {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for UserProvisionType {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct UserResultsPage {
@@ -2593,7 +2841,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleAction {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "allow" => Ok(Self::Allow),
                 "deny" => Ok(Self::Deny),
@@ -2602,6 +2850,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleAction {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleAction {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum VpcFirewallRuleDirection {
         #[serde(rename = "inbound")]
@@ -2621,7 +2883,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleDirection {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "inbound" => Ok(Self::Inbound),
                 "outbound" => Ok(Self::Outbound),
@@ -2630,6 +2892,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleDirection {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleDirection {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Filter for a firewall rule. A given packet must match every field that
     /// is present for the rule to apply to it. A packet matches a field if any
     /// entry in that field matches the packet.
@@ -2692,7 +2968,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleProtocol {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "TCP" => Ok(Self::Tcp),
                 "UDP" => Ok(Self::Udp),
@@ -2702,6 +2978,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleProtocol {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleProtocol {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum VpcFirewallRuleStatus {
         #[serde(rename = "disabled")]
@@ -2721,7 +3011,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcFirewallRuleStatus {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "disabled" => Ok(Self::Disabled),
                 "enabled" => Ok(Self::Enabled),
@@ -2730,6 +3020,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcFirewallRuleStatus {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcFirewallRuleStatus {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `VpcFirewallRuleTarget` is used to specify the set of [`Instance`]s to
     /// which a firewall rule applies.
     #[derive(Clone, Debug, Deserialize, Serialize)]
@@ -2843,7 +3147,7 @@ pub mod types {
 
     impl std::str::FromStr for VpcRouterKind {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "system" => Ok(Self::System),
                 "custom" => Ok(Self::Custom),
@@ -2852,6 +3156,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for VpcRouterKind {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for VpcRouterKind {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct VpcRouterResultsPage {
diff --git a/progenitor-impl/tests/output/propolis-server-builder-tagged.out b/progenitor-impl/tests/output/propolis-server-builder-tagged.out
index a45ff73..28a7c37 100644
--- a/progenitor-impl/tests/output/propolis-server-builder-tagged.out
+++ b/progenitor-impl/tests/output/propolis-server-builder-tagged.out
@@ -245,7 +245,7 @@ pub mod types {
 
     impl std::str::FromStr for InstanceState {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "Creating" => Ok(Self::Creating),
                 "Starting" => Ok(Self::Starting),
@@ -262,6 +262,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct InstanceStateMonitorRequest {
         pub gen: u64,
@@ -306,7 +320,7 @@ pub mod types {
 
     impl std::str::FromStr for InstanceStateRequested {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "Run" => Ok(Self::Run),
                 "Stop" => Ok(Self::Stop),
@@ -317,6 +331,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for InstanceStateRequested {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for InstanceStateRequested {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum MigrationState {
         Sync,
@@ -350,7 +378,7 @@ pub mod types {
 
     impl std::str::FromStr for MigrationState {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "Sync" => Ok(Self::Sync),
                 "RamPush" => Ok(Self::RamPush),
@@ -367,6 +395,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for MigrationState {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for MigrationState {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct NetworkInterface {
         pub attachment: NetworkInterfaceAttachmentState,
@@ -404,7 +446,7 @@ pub mod types {
     pub struct Slot(pub u8);
     impl std::ops::Deref for Slot {
         type Target = u8;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &u8 {
             &self.0
         }
     }
@@ -576,7 +618,7 @@ pub mod types {
 
         impl std::convert::TryFrom<CrucibleOpts> for super::CrucibleOpts {
             type Error = String;
-            fn try_from(value: CrucibleOpts) -> Result<Self, Self::Error> {
+            fn try_from(value: CrucibleOpts) -> Result<Self, String> {
                 Ok(Self {
                     cert_pem: value.cert_pem?,
                     control: value.control?,
@@ -643,7 +685,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DiskAttachment> for super::DiskAttachment {
             type Error = String;
-            fn try_from(value: DiskAttachment) -> Result<Self, Self::Error> {
+            fn try_from(value: DiskAttachment) -> Result<Self, String> {
                 Ok(Self {
                     disk_id: value.disk_id?,
                     generation_id: value.generation_id?,
@@ -744,7 +786,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DiskRequest> for super::DiskRequest {
             type Error = String;
-            fn try_from(value: DiskRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: DiskRequest) -> Result<Self, String> {
                 Ok(Self {
                     device: value.device?,
                     gen: value.gen?,
@@ -807,7 +849,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Error> for super::Error {
             type Error = String;
-            fn try_from(value: Error) -> Result<Self, Self::Error> {
+            fn try_from(value: Error) -> Result<Self, String> {
                 Ok(Self {
                     error_code: value.error_code?,
                     message: value.message?,
@@ -879,7 +921,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Instance> for super::Instance {
             type Error = String;
-            fn try_from(value: Instance) -> Result<Self, Self::Error> {
+            fn try_from(value: Instance) -> Result<Self, String> {
                 Ok(Self {
                     disks: value.disks?,
                     nics: value.nics?,
@@ -967,7 +1009,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceEnsureRequest> for super::InstanceEnsureRequest {
             type Error = String;
-            fn try_from(value: InstanceEnsureRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceEnsureRequest) -> Result<Self, String> {
                 Ok(Self {
                     cloud_init_bytes: value.cloud_init_bytes?,
                     disks: value.disks?,
@@ -1005,7 +1047,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceEnsureResponse> for super::InstanceEnsureResponse {
             type Error = String;
-            fn try_from(value: InstanceEnsureResponse) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceEnsureResponse) -> Result<Self, String> {
                 Ok(Self {
                     migrate: value.migrate?,
                 })
@@ -1039,7 +1081,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceGetResponse> for super::InstanceGetResponse {
             type Error = String;
-            fn try_from(value: InstanceGetResponse) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceGetResponse) -> Result<Self, String> {
                 Ok(Self {
                     instance: value.instance?,
                 })
@@ -1099,7 +1141,7 @@ pub mod types {
             for super::InstanceMigrateInitiateRequest
         {
             type Error = String;
-            fn try_from(value: InstanceMigrateInitiateRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceMigrateInitiateRequest) -> Result<Self, String> {
                 Ok(Self {
                     migration_id: value.migration_id?,
                     src_addr: value.src_addr?,
@@ -1137,7 +1179,7 @@ pub mod types {
             for super::InstanceMigrateInitiateResponse
         {
             type Error = String;
-            fn try_from(value: InstanceMigrateInitiateResponse) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceMigrateInitiateResponse) -> Result<Self, String> {
                 Ok(Self {
                     migration_id: value.migration_id?,
                 })
@@ -1171,7 +1213,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceMigrateStatusRequest> for super::InstanceMigrateStatusRequest {
             type Error = String;
-            fn try_from(value: InstanceMigrateStatusRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceMigrateStatusRequest) -> Result<Self, String> {
                 Ok(Self {
                     migration_id: value.migration_id?,
                 })
@@ -1205,7 +1247,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceMigrateStatusResponse> for super::InstanceMigrateStatusResponse {
             type Error = String;
-            fn try_from(value: InstanceMigrateStatusResponse) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceMigrateStatusResponse) -> Result<Self, String> {
                 Ok(Self {
                     state: value.state?,
                 })
@@ -1311,7 +1353,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceProperties> for super::InstanceProperties {
             type Error = String;
-            fn try_from(value: InstanceProperties) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceProperties) -> Result<Self, String> {
                 Ok(Self {
                     bootrom_id: value.bootrom_id?,
                     description: value.description?,
@@ -1351,7 +1393,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceStateMonitorRequest> for super::InstanceStateMonitorRequest {
             type Error = String;
-            fn try_from(value: InstanceStateMonitorRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceStateMonitorRequest) -> Result<Self, String> {
                 Ok(Self { gen: value.gen? })
             }
         }
@@ -1395,7 +1437,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceStateMonitorResponse> for super::InstanceStateMonitorResponse {
             type Error = String;
-            fn try_from(value: InstanceStateMonitorResponse) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceStateMonitorResponse) -> Result<Self, String> {
                 Ok(Self {
                     gen: value.gen?,
                     state: value.state?,
@@ -1442,7 +1484,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterface> for super::NetworkInterface {
             type Error = String;
-            fn try_from(value: NetworkInterface) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterface) -> Result<Self, String> {
                 Ok(Self {
                     attachment: value.attachment?,
                     name: value.name?,
@@ -1489,7 +1531,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterfaceRequest> for super::NetworkInterfaceRequest {
             type Error = String;
-            fn try_from(value: NetworkInterfaceRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterfaceRequest) -> Result<Self, String> {
                 Ok(Self {
                     name: value.name?,
                     slot: value.slot?,
diff --git a/progenitor-impl/tests/output/propolis-server-builder.out b/progenitor-impl/tests/output/propolis-server-builder.out
index 8aa9dbc..63937ae 100644
--- a/progenitor-impl/tests/output/propolis-server-builder.out
+++ b/progenitor-impl/tests/output/propolis-server-builder.out
@@ -247,7 +247,7 @@ pub mod types {
 
     impl std::str::FromStr for InstanceState {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "Creating" => Ok(Self::Creating),
                 "Starting" => Ok(Self::Starting),
@@ -264,6 +264,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct InstanceStateMonitorRequest {
         pub gen: u64,
@@ -310,7 +324,7 @@ pub mod types {
 
     impl std::str::FromStr for InstanceStateRequested {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "Run" => Ok(Self::Run),
                 "Stop" => Ok(Self::Stop),
@@ -321,6 +335,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for InstanceStateRequested {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for InstanceStateRequested {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
     )]
@@ -356,7 +384,7 @@ pub mod types {
 
     impl std::str::FromStr for MigrationState {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "Sync" => Ok(Self::Sync),
                 "RamPush" => Ok(Self::RamPush),
@@ -373,6 +401,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for MigrationState {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for MigrationState {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct NetworkInterface {
         pub attachment: NetworkInterfaceAttachmentState,
@@ -410,7 +452,7 @@ pub mod types {
     pub struct Slot(pub u8);
     impl std::ops::Deref for Slot {
         type Target = u8;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &u8 {
             &self.0
         }
     }
@@ -582,7 +624,7 @@ pub mod types {
 
         impl std::convert::TryFrom<CrucibleOpts> for super::CrucibleOpts {
             type Error = String;
-            fn try_from(value: CrucibleOpts) -> Result<Self, Self::Error> {
+            fn try_from(value: CrucibleOpts) -> Result<Self, String> {
                 Ok(Self {
                     cert_pem: value.cert_pem?,
                     control: value.control?,
@@ -649,7 +691,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DiskAttachment> for super::DiskAttachment {
             type Error = String;
-            fn try_from(value: DiskAttachment) -> Result<Self, Self::Error> {
+            fn try_from(value: DiskAttachment) -> Result<Self, String> {
                 Ok(Self {
                     disk_id: value.disk_id?,
                     generation_id: value.generation_id?,
@@ -750,7 +792,7 @@ pub mod types {
 
         impl std::convert::TryFrom<DiskRequest> for super::DiskRequest {
             type Error = String;
-            fn try_from(value: DiskRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: DiskRequest) -> Result<Self, String> {
                 Ok(Self {
                     device: value.device?,
                     gen: value.gen?,
@@ -813,7 +855,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Error> for super::Error {
             type Error = String;
-            fn try_from(value: Error) -> Result<Self, Self::Error> {
+            fn try_from(value: Error) -> Result<Self, String> {
                 Ok(Self {
                     error_code: value.error_code?,
                     message: value.message?,
@@ -885,7 +927,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Instance> for super::Instance {
             type Error = String;
-            fn try_from(value: Instance) -> Result<Self, Self::Error> {
+            fn try_from(value: Instance) -> Result<Self, String> {
                 Ok(Self {
                     disks: value.disks?,
                     nics: value.nics?,
@@ -973,7 +1015,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceEnsureRequest> for super::InstanceEnsureRequest {
             type Error = String;
-            fn try_from(value: InstanceEnsureRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceEnsureRequest) -> Result<Self, String> {
                 Ok(Self {
                     cloud_init_bytes: value.cloud_init_bytes?,
                     disks: value.disks?,
@@ -1011,7 +1053,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceEnsureResponse> for super::InstanceEnsureResponse {
             type Error = String;
-            fn try_from(value: InstanceEnsureResponse) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceEnsureResponse) -> Result<Self, String> {
                 Ok(Self {
                     migrate: value.migrate?,
                 })
@@ -1045,7 +1087,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceGetResponse> for super::InstanceGetResponse {
             type Error = String;
-            fn try_from(value: InstanceGetResponse) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceGetResponse) -> Result<Self, String> {
                 Ok(Self {
                     instance: value.instance?,
                 })
@@ -1105,7 +1147,7 @@ pub mod types {
             for super::InstanceMigrateInitiateRequest
         {
             type Error = String;
-            fn try_from(value: InstanceMigrateInitiateRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceMigrateInitiateRequest) -> Result<Self, String> {
                 Ok(Self {
                     migration_id: value.migration_id?,
                     src_addr: value.src_addr?,
@@ -1143,7 +1185,7 @@ pub mod types {
             for super::InstanceMigrateInitiateResponse
         {
             type Error = String;
-            fn try_from(value: InstanceMigrateInitiateResponse) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceMigrateInitiateResponse) -> Result<Self, String> {
                 Ok(Self {
                     migration_id: value.migration_id?,
                 })
@@ -1177,7 +1219,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceMigrateStatusRequest> for super::InstanceMigrateStatusRequest {
             type Error = String;
-            fn try_from(value: InstanceMigrateStatusRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceMigrateStatusRequest) -> Result<Self, String> {
                 Ok(Self {
                     migration_id: value.migration_id?,
                 })
@@ -1211,7 +1253,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceMigrateStatusResponse> for super::InstanceMigrateStatusResponse {
             type Error = String;
-            fn try_from(value: InstanceMigrateStatusResponse) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceMigrateStatusResponse) -> Result<Self, String> {
                 Ok(Self {
                     state: value.state?,
                 })
@@ -1317,7 +1359,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceProperties> for super::InstanceProperties {
             type Error = String;
-            fn try_from(value: InstanceProperties) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceProperties) -> Result<Self, String> {
                 Ok(Self {
                     bootrom_id: value.bootrom_id?,
                     description: value.description?,
@@ -1357,7 +1399,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceStateMonitorRequest> for super::InstanceStateMonitorRequest {
             type Error = String;
-            fn try_from(value: InstanceStateMonitorRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceStateMonitorRequest) -> Result<Self, String> {
                 Ok(Self { gen: value.gen? })
             }
         }
@@ -1401,7 +1443,7 @@ pub mod types {
 
         impl std::convert::TryFrom<InstanceStateMonitorResponse> for super::InstanceStateMonitorResponse {
             type Error = String;
-            fn try_from(value: InstanceStateMonitorResponse) -> Result<Self, Self::Error> {
+            fn try_from(value: InstanceStateMonitorResponse) -> Result<Self, String> {
                 Ok(Self {
                     gen: value.gen?,
                     state: value.state?,
@@ -1448,7 +1490,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterface> for super::NetworkInterface {
             type Error = String;
-            fn try_from(value: NetworkInterface) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterface) -> Result<Self, String> {
                 Ok(Self {
                     attachment: value.attachment?,
                     name: value.name?,
@@ -1495,7 +1537,7 @@ pub mod types {
 
         impl std::convert::TryFrom<NetworkInterfaceRequest> for super::NetworkInterfaceRequest {
             type Error = String;
-            fn try_from(value: NetworkInterfaceRequest) -> Result<Self, Self::Error> {
+            fn try_from(value: NetworkInterfaceRequest) -> Result<Self, String> {
                 Ok(Self {
                     name: value.name?,
                     slot: value.slot?,
diff --git a/progenitor-impl/tests/output/propolis-server-positional.out b/progenitor-impl/tests/output/propolis-server-positional.out
index 7d42743..d8b2b0e 100644
--- a/progenitor-impl/tests/output/propolis-server-positional.out
+++ b/progenitor-impl/tests/output/propolis-server-positional.out
@@ -167,7 +167,7 @@ pub mod types {
 
     impl std::str::FromStr for InstanceState {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "Creating" => Ok(Self::Creating),
                 "Starting" => Ok(Self::Starting),
@@ -184,6 +184,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct InstanceStateMonitorRequest {
         pub gen: u64,
@@ -216,7 +230,7 @@ pub mod types {
 
     impl std::str::FromStr for InstanceStateRequested {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "Run" => Ok(Self::Run),
                 "Stop" => Ok(Self::Stop),
@@ -227,6 +241,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for InstanceStateRequested {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for InstanceStateRequested {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum MigrationState {
         Sync,
@@ -260,7 +288,7 @@ pub mod types {
 
     impl std::str::FromStr for MigrationState {
         type Err = &'static str;
-        fn from_str(value: &str) -> Result<Self, Self::Err> {
+        fn from_str(value: &str) -> Result<Self, &'static str> {
             match value {
                 "Sync" => Ok(Self::Sync),
                 "RamPush" => Ok(Self::RamPush),
@@ -277,6 +305,20 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<&str> for MigrationState {
+        type Error = &'static str;
+        fn try_from(value: &str) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
+    impl std::convert::TryFrom<&String> for MigrationState {
+        type Error = &'static str;
+        fn try_from(value: &String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct NetworkInterface {
         pub attachment: NetworkInterfaceAttachmentState,
@@ -302,7 +344,7 @@ pub mod types {
     pub struct Slot(pub u8);
     impl std::ops::Deref for Slot {
         type Target = u8;
-        fn deref(&self) -> &Self::Target {
+        fn deref(&self) -> &u8 {
             &self.0
         }
     }
diff --git a/progenitor-impl/tests/output/test_default_params_builder.out b/progenitor-impl/tests/output/test_default_params_builder.out
index d1c2752..f49160d 100644
--- a/progenitor-impl/tests/output/test_default_params_builder.out
+++ b/progenitor-impl/tests/output/test_default_params_builder.out
@@ -103,7 +103,7 @@ pub mod types {
 
         impl std::convert::TryFrom<BodyWithDefaults> for super::BodyWithDefaults {
             type Error = String;
-            fn try_from(value: BodyWithDefaults) -> Result<Self, Self::Error> {
+            fn try_from(value: BodyWithDefaults) -> Result<Self, String> {
                 Ok(Self {
                     forty_two: value.forty_two?,
                     s: value.s?,
@@ -164,7 +164,7 @@ pub mod types {
 
         impl std::convert::TryFrom<Error> for super::Error {
             type Error = String;
-            fn try_from(value: Error) -> Result<Self, Self::Error> {
+            fn try_from(value: Error) -> Result<Self, String> {
                 Ok(Self {
                     error_code: value.error_code?,
                     message: value.message?,