As you can see, you can create various types of messages between lifelines in a sequence diagram, and select an existing operation as a signature of the message.

如您所看到的，您可以在序列图中的生命线之间创建各种类型的消息，并选择现有的操作作为消息的标记。

youdao

As you can see, you can create various types of messages between lifelines in a sequence diagram, and select an existing operation as a signature of the message.

如您所看到的，您可以在序列图中的生命线之间创建各种类型的消息，并选择现有的操作作为消息的标记。

youdao