| GoogleSignInApi | Api interface for Sign In with Google. |
| GoogleSignInAccount | Class that holds the basic account information of the signed in Google user. |
| GoogleSignInOptions | GoogleSignInOptions is options used to configure the
GOOGLE_SIGN_IN_API. |
| GoogleSignInOptions.Builder | Builder for GoogleSignInOptions,
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| GoogleSignInResult | GoogleSignInResults are Result implementations that potentially contain a GoogleSignInAccount. |
| GoogleSignInStatusCodes | Google Sign In specific status codes, for use in Status#getStatusCode(). |
| RevocationBoundService | Handles Google Sign-In user revocation. |