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#java‑16

Broken Stream::group with Java 16's mapMulti#post#java‑16 #streams
Java 16 adds a new method mapMulti to Stream and it can be abused to simulate a reverse-flatMap aka group operation (with shortcomings).
Faster flatMaps with Stream::mapMulti in Java 16#post#java‑16 #streams #performance
Java 16 adds a new method mapMulti to Stream. It fills the same role as flatMap, but is more imperative - and faster.