code: def send_direct_operate_command(self, command, index, callback=asiodnp3.PrintingCommandCallback.Get(),
                                      config=opendnp3.TaskConfig().Default()):
          
          self.master.DirectOperate(command, index, callback, config)
docs: Direct operate a single command
  
          :param command: command to operate
          :param index: index of the command
          :param callback: callback that will be invoked upon completion or failure
          :param config: optional configuration that controls normal callbacks and allows the user to be specified for SA