AddMember.
        [Preview API]
        :param str container_id:
        :param str member_id:
        :rtype: bool

def add_member(self, container_id, member_id):
        """AddMember.
        [Preview API]
        :param str container_id:
        :param str member_id:
        :rtype: bool
        """
        route_values = {}
        if container_id is not None:
            route_values['containerId'] = self._serialize.url('container_id', container_id, 'str')
        if member_id is not None:
            route_values['memberId'] = self._serialize.url('member_id', member_id, 'str')
        response = self._send(http_method='PUT',
                              location_id='8ba35978-138e-41f8-8963-7b1ea2c5f775',
                              version='5.0-preview.1',
                              route_values=route_values)
        return self._deserialize('bool', response)