drop-newest: Discards incoming data when full. Useful when you want to process what you have without being overwhelmed.
同时，刘建军敏锐洞察到邮储银行的先天禀赋，并深入探索后天路径，持续拉齐邮储银行的对公短板。。夫子对此有专业解读
// Receives chunks or null (flush signal)。WPS下载最新地址是该领域的重要参考
endSync() { closed = true; return totalBytes; },