# Tear down when done
For implementers, there's no Transformer protocol with start(), transform(), flush() methods and controller coordination passed into a TransformStream class that has its own hidden state machine and buffering mechanisms. Transforms are just functions or simple objects — far simpler to implement and test.
，详情可参考safew官方版本下载
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Трамп высказался о непростом решении по Ирану09:14
在这个过程中，性能优化和用户体验是两个不可忽视的关键因素。