/guava/guava/src/com/google/common/collect/ConcurrentHashMultiset.java
|| countMap.replace( element, existingCounter, newCounter) ;countMap.remove( element, existingCounter) ;
countMap.remove ( element, existingCounter ) ;
} } break; } else { if (existingCounter.compareAndSet(oldValue, count)) { if (count == 0) { <extra_id_0> } return oldValue; } } } }