/guava/android/guava/src/com/google/common/collect/HashBiMap.java
CollectPreconditions.checkRemove( ABSENT != indexToRemove) ;
CollectPreconditions.checkRemove ( indexToRemove != ABSENT ) ;
remaining--; return result; } @Override public void remove() { checkForComodification(); <extra_id_0> biMap.removeEntry(indexToRemove); if (index == biMap.size) { index = indexToRemove; } indexToRemove = ABSENT; expectedModCount = biMap.modCount;