OptionalmodelThe model provider service to create. Do not set name; the server derives
it from parent and model_provider_service_id.
OptionalmodelName for the model provider service, e.g. "openai_prod".
OptionalparentName of the parent schema.
Format: schemas/{catalog}.{schema}.
Each {...} component is capped at 255 characters individually.
Request to create a new model provider service.