Return null or something nullable from a lambda in transformation method
Reports transform operations that may return
null inside a Reactive Stream chain.
Reactive Streams don't support nullable values, which causes such code to fail. The quick-fix suggests replacing
mapNotNull, which omits exceptions.
After the quick-fix is applied:
New in 2019.3
IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Reactive Streams, 233.SNAPSHOT