def __init__(self, access_token, user_agent, revoke_uri=None):
super(AccessTokenCredentials, self).__init__(<EOL>access_token,<EOL>None,<EOL>None,<EOL>None,<EOL>None,<EOL>None,<EOL>user_agent,<EOL>revoke_uri=revoke_uri)<EOL>
Create an instance of OAuth2Credentials

        This is one of the few types if Credentials that you should contrust,
        Credentials objects are usually instantiated by a Flow.

        Args:
            access_token: string, access token.
            user_agent: string, The HTTP User-Agent to provide for this
                        application.
            revoke_uri: string, URI for revoke endpoint. Defaults to None; a
                        token can't be revoked if this is None.