docs: def get_resource_search_session(self, proxy):
          """Gets a resource search session.
  
          arg:    proxy (osid.proxy.Proxy): a proxy
          return: (osid.resource.ResourceSearchSession) - ``a
                  ResourceSearchSession``
          raise:  NullArgument - ``proxy`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  Unimplemented - ``supports_resource_search()`` is
                  ``false``
          *compliance: optional -- This method must be implemented if
          ``supports_resource_search()`` is ``true``.*
  
          """
          if not self.supports_resource_search():
              raise errors.Unimplemented()
          # pylint: disable=no-member
          return sessions.ResourceSearchSession(proxy=proxy, runtime=self._runtime)