The version of the API functions. Part of the path.
What platform to run the service on. If not specified, the class should determine this from other means. Either way, the platform actually used will be in the "platform" getter.
Hostname for the API call (if this is running on GCP)
Region where the LLM is stored (if this is running on GCP)
Parameters needed to setup the client connection. AuthOptions are something like GoogleAuthOptions (from google-auth-library) or WebGoogleAuthOptions.