A sequence of extension generators or extension handlers is referred to as an extension chain.
扩展生成器或扩展处理程序的序列称为扩展链。
Each extension generator is then placed in an extension generator chain.
然后将每个扩展生成器放置在扩展生成器链中。
Each extension handler is then placed in an extension handler chain.
然后将每个扩展处理程序放置在扩展处理程序链中。
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