/guava/android/guava/src/com/google/common/collect/AbstractMapBasedMultimap.java
if ( ancestor != null ) { ancestor.removeIfEmpty ( ) ; } else if ( delegate.isEmpty ( ) ) { map.remove ( key ) ; }
if (newDelegate != null) { delegate = newDelegate; } } } void removeIfEmpty() { <extra_id_0> } @ParametricNullness K getKey() { return key; } void addToMap() {