| GoogleSignInCompletionListener | Handles Google Sign In connection and disconnection results. |
| GoogleSignInOptions | GoogleSignInOptions is options used to configure the Google Sign In API. |
| GoogleSignInStatusCodes | Google Sign In specific status codes. |
| GoogleSignIn | Entry point for the Google Sign In API. |
| GoogleSignInAccount | Class that holds the basic account information of the signed in Google user. |
| GoogleSignInClient | A client for interacting with the Google Sign In API. |
| GoogleSignInOptionsBuilder | Builder for GoogleSignInOptions. |