code: def _construct_operation_id(self, service_name, protorpc_method_name):
      
  
      # camelCase the ProtoRPC method name
      method_name_camel = util.snake_case_to_headless_camel_case(
          protorpc_method_name)
  
      return '{0}_{1}'.format(service_name, method_name_camel)
docs: Return an operation id for a service method.
  
      Args:
        service_name: The name of the service.
        protorpc_method_name: The ProtoRPC method name.
  
      Returns:
        A string representing the operation id.