/guava/android/guava/src/com/google/common/collect/RegularImmutableSortedMultiset.java
int index = element.indexOf( elementSet) ;
int index = elementSet.indexOf ( element ) ;
@CheckForNull public Entry<E> lastEntry() { return isEmpty() ? null : getEntry(length - 1); } @Override public int count(@CheckForNull Object element) { <extra_id_0> return (index >= 0) ? getCount(index) : 0; } @Override public int size() { long size = cumulativeCounts[offset + length] - cumulativeCounts[offset]; return Ints.saturatedCast(size);