Will there be a future requirement to map the source and target types in another mapping or multiple times in the current mapping?
未来是否需要在另一个映射中映射源和目标（或在当前映射中多次映射）？
If there is a future requirement to support various token types, information about the type of token provided can be added to the header along with a related version change in the header format.
如果将来要求支持各种令牌符号类型，那么提供的令牌符号类型的信息将连同消息头格式中的相关版本变更信息一起添加到消息头中。
If there is a future requirement to support various token types, information about the type of token provided can be added to the header along with a related version change in the header format.
如果将来要求支持各种令牌符号类型，那么提供的令牌符号类型的信息将连同消息头格式中的相关版本变更信息一起添加到消息头中。
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