SetAuthURL allows setting a different authentication provider URL if different from the API URL, defaults to the API URL provided in NewClient.

SetHTTPClient allows the use of a custom-configured HTTP client for API requests, Client defaults to a default http.Client{} otherwise.

SetVersion sets the operator version in the client for self-identification.

Active represents an active login token has been obtained, but makes no guarantees regarding revocation of said token.

Failed reflects a login that has never had a success.

Inactive represents a token that has expired without successfully being renewed with a new token (auto-refresh failure), exclusive of bad credentials.

InvalidCreds is a non-temporary failed state, requiring new credential data to resolve.

Unstarted reflects an uninitialized login state, typical of an asynchronous authentication environment.