/guava/guava/src/com/google/common/collect/ForwardingNavigableSet.java
return tailSet( toElement, false) ;
return headSet ( toElement, false ) ;
} @Override public NavigableSet<E> headSet(@ParametricNullness E toElement, boolean inclusive) { return delegate().headSet(toElement, inclusive); } protected SortedSet<E> standardHeadSet(@ParametricNullness E toElement) { <extra_id_0> } @Override public NavigableSet<E> tailSet(@ParametricNullness E fromElement, boolean inclusive) { return delegate().tailSet(fromElement, inclusive); } protected SortedSet<E> standardTailSet(@ParametricNullness E fromElement) {