/guava/guava/src/com/google/common/collect/ConcurrentHashMultiset.java
|| countMap.replace( element, existingCounter, newCounter) ) { return 0;countMap.remove( element, existingCounter) ;
countMap.remove ( element, existingCounter ) ;
if (oldValue < occurrences) { return false; } int newValue = oldValue - occurrences; if (existingCounter.compareAndSet(oldValue, newValue)) { if (newValue == 0) { <extra_id_0> } return true; } } } @CanIgnoreReturnValue