This is fundamentally different from Web streams' pipeThrough(), which starts actively pumping data from the source to the transform as soon as you set up the pipe. Pull semantics mean you control when processing happens, and stopping iteration stops processing.
Жители Санкт-Петербурга устроили «крысогон»17:52
。关于这个话题，同城约会提供了深入分析
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