Generated methods return `ResponseValue<reqwest::Upgrade`, which may be
passed to a websocket protocol implementation such as
`tokio_tungstenite::WebSocketStream::from_raw_stream(rv.into_inner(), ...)`
for the purpose of implementing against the raw websocket connection, but
may later be extended as a generic to allow higher-level channel message
definitions.
Per the changelog, consumers will need to depend on reqwest 0.11.12 or
newer for HTTP Upgrade support, as well as base64 and rand if any
endpoints are websocket channels:
```
[dependencies]
reqwest = { version = "0.11.12" features = ["json", "stream"] }
base64 = "0.13"
rand = "0.8"
```
Co-authored-by: lif <>
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