'Return a Volume object based on a volume ID.
:param  volume_id: The ID of the volume
:type   volume_id: ``int``
:return:  A StorageVolume object for the volume
:rtype:   :class:`StorageVolume`'

def ex_get_volume(self, volume_id):

    action = self._get_project_action(('volume/%s' % volume_id))
    response = self.connection.request(action)
    return self._to_volume(response.object)
