/guava/android/guava/src/com/google/common/collect/AbstractBiMap.java
removeFromInverseMap( oldValue) ;removeFromBothMaps( key) ;
removeFromBothMaps ( key ) ;
} @Override public boolean remove(@CheckForNull Object key) { if (!contains(key)) { return false; } <extra_id_0> return true; } @Override public boolean removeAll(Collection<?> keysToRemove) { return standardRemoveAll(keysToRemove); }