'Returns the details of a single volume_type.
For a full list of available parameters, please refer to the official
API reference:
http://developer.openstack.org/api-ref/block-storage/v1/#show-volume-type-v1'

def show_volume_type(self, volume_type_id):

    url = ('types/%s' % volume_type_id)
    (resp, body) = self.get(url)
    body = json.loads(body)
    self.expected_success(200, resp.status)
    return rest_client.ResponseBody(resp, body)
