old_contents: #    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.
  
  from keystoneclient import base
  
  
  class Extension(base.Resource):
      """Represents an Identity API extension."""
      def __repr__(self):
          return "<Extension %s>" % self._info
  
  
  class ExtensionManager(base.ManagerWithFind):
      """Manager class for listing Identity API extensions."""
  
      resource_class = Extension
  
      def list(self):
          """List all available extentions."""
          return self._list('/extensions', 'extensions')
  
new_contents: #    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.
  
  from keystoneclient import base
  
  
  class Extension(base.Resource):
      """Represents an Identity API extension."""
      def __repr__(self):
          return "<Extension %s>" % self._info
  
  
  class ExtensionManager(base.ManagerWithFind):
      """Manager class for listing Identity API extensions."""
  
      resource_class = Extension
  
      def list(self):
          """List all available extensions."""
          return self._list('/extensions', 'extensions')
  
subject: Fix a misspelling in a comment