/guava/android/guava/src/com/google/common/collect/ConcurrentHashMultiset.java
if ( newCount == 0) {   return true; }else {   return ( countMap.putIfAbsent( element, new AtomicInteger( newCount) ) ) == null; }
[Delete]
while (true) { AtomicInteger existingCounter = Maps.safeGet(countMap, element); if (existingCounter == null) { if (count == 0) { return 0; } else { <extra_id_0> if (existingCounter == null) { return 0; } } } while (true) {