text: # Copyright 2012 OpenStack Foundation
  # All Rights Reserved.
  #
  #    Licensed under the Apache License, Version 2.0 (the "License"); you may
  #    not use this file except in compliance with the License. You may obtain
  #    a copy of the License at
  #
  #         http://www.apache.org/licenses/LICENSE-2.0
  #
  #    Unless required by applicable law or agreed to in writing, software
  #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  #    License for the specific language governing permissions and limitations
  #    under the License.
  
  import json
  
  from tempest.common import service_client
  
  
  class BaseExtensionsClient(service_client.ServiceClient):
  
      def list_extensions(self):
          url = 'extensions'
          resp, body = self.get(url)
          body = json.loads(body)
          self.expected_success(200, resp.status)
          return service_client.ResponseBodyList(resp, body['extensions'])
  
  
  class ExtensionsClient(BaseExtensionsClient):
      """
      Volume V1 extensions client.
      """
  