Client to bundle configuration needed for API requests.
(Optional) The target language used for translations and language names. (Defaults to :data:ENGLISH_ISO_639.)
(Optional) The OAuth2 Credentials to use for this client. If not passed (and if no _http object is passed), falls back to the default inferred from the environment.
(Optional) HTTP object to make requests. Can be any object that defines request() with the same interface as requests.Session.request. If not passed, an _http object is created that is bound to the credentials for the current object. This parameter should be considered private, and could change in the future.
The client info used to send a user-agent string along with API requests. If None, then default info will be used. Generally, you only need to set this if you're developing your own library or partner tool.
`google.api_core.client_options.ClientOptions` or `dict`
(Optional) Client options used to set user options on the client. API Endpoint should be set through client_options.