Use of namespaces alters the content (but not the shape) of the logical message tree, which is why a new domain was created instead of altering the original XML domain.
命名空间的使用改变了逻辑消息树的内容（但不改变形状），这就是创建新域而不是修改原始 XML 域的原因。
2
This option is important when trying to quickly get into the flows of the message without significantly altering the behavior.
当尝试在不大幅度改变行为的情况下快速进入消息流时，此选项就非常重要。
3
This example is only interested in altering the message on the way out of the client.