To generate a new version of openapi_client run a command like this:
  docker run --rm -v /builds/openapi:/local openapitools/openapi-generator-cli generate -i /local/openapi.yaml -g rust-server -o /local/openapi_client

To take a new version of this openapi_client:
- delete the models directory if present
- replace across entire directory 3x models:: with models::
- edit src/server/mod.rs:
  - line 232 and 523 change , e) to , param_baudrate)
  - line 346 add:
                                                    let body = serde_json::to_string(&body).expect("impossible to fail to serialize");
- edit srv/client/mod.rs, line 466:
  - remove: 
                                                 Ok(body.to_string())

  - replace with:
                                                 serde_json::from_str::<models::Hat>(body)
                                                     .map_err(|e| e.into())
