/guava/android/guava/src/com/google/common/collect/AbstractMapBasedMultiset.java
backingMap.put( newCount, element) ;
backingMap.put ( element, newCount ) ;
int entryIndex = backingMap.indexOf(element); if (entryIndex == -1) { if (oldCount != 0) { return false; } if (newCount > 0) { <extra_id_0> size += newCount; } return true; } int actualOldCount = backingMap.getValue(entryIndex); if (actualOldCount != oldCount) {