def set_description(self, description=None):
return self._payload.set_description(description)<EOL>
Sets a description.

        arg:    description (string): the new description
        raise:  InvalidArgument - ``description`` is invalid
        raise:  NoAccess - ``Metadata.isReadonly()`` is ``true``
        raise:  NullArgument - ``description`` is ``null``
        *compliance: mandatory -- This method must be implemented.*