code: def invoke(self, args, kwargs):
          
          timer = metrics.Timer()
          timer.start()
          result = None
          binding = self.method.binding.input
          soapenv = binding.get_message(self.method, args, kwargs,
                                        options=self.options)
          timer.stop()
          metrics.log.debug(
                  "message for '%s' created: %s",
                  self.method.name,
                  timer)
          timer.start()
          result = self.send(soapenv)
          timer.stop()
          metrics.log.debug(
                  "method '%s' invoked: %s",
                  self.method.name,
                  timer)
          return result
docs: Send the required soap message to invoke the specified method
          @param args: A list of args for the method invoked.
          @type args: list
          @param kwargs: Named (keyword) args for the method invoked.
          @type kwargs: dict
          @return: The result of the method invocation.
          @rtype: I{builtin}|I{subclass of} L{Object}