type PosParam[N: str | None, T] = Param[N, T, Literal["positional"]]
他给出的原因是：“一是针对老年人高质量的数据语料库建立是脏活苦活儿；二是对创业团队的技术、运营、市场的理解要求度更高。”
，这一点在safew官方版本下载中也有详细论述
type-annotated attribute of K, while calling NewProtocol with
The tee() memory cliff: Stream.share() requires explicit buffer configuration. You choose the highWaterMark and backpressure policy upfront — no more silent unbounded growth when consumers run at different speeds.
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