/guava/android/guava/src/com/google/common/collect/Sets.java
if ( set2.contains( e) ) {   return e; }
[Delete]
@Override @ParametricNullness public E last() { SortedSet<E> sortedUnfiltered = (SortedSet<E>) unfiltered; while (true) { E element = sortedUnfiltered.last(); <extra_id_0> return element; } sortedUnfiltered = sortedUnfiltered.headSet(element); } } }