@classmethod
def set_client_credentials(cls, clientId, clientSecret, scopes):
    """Set the client credentials and scope.

        Sets the client credentials for all services where you haven't
        set them individually. These credentials are used to fetch the
        Oauth token used to authenticate you against our API.
        """
    cls._clientId = clientId
    cls._clientSecret = clientSecret
    cls._scopes = scopes
