/guava/android/guava/src/com/google/common/collect/AbstractMapBasedMultimap.java
removeIfEmpty( ) ;refreshIfEmpty( ) ;
refreshIfEmpty ( ) ;
refreshIfEmpty(); return getSortedSetDelegate().first(); } @Override @ParametricNullness public V last() { <extra_id_0> return getSortedSetDelegate().last(); } @Override public SortedSet<V> headSet(@ParametricNullness V toElement) { refreshIfEmpty(); return new WrappedSortedSet(