/guava/guava/src/com/google/common/collect/ForwardingNavigableMap.java
if ( toRemove == null) {
if ( entry == null ) {
@CheckForNull protected Entry<K, V> standardLastEntry() { return Iterables.<@Nullable Entry<K, V>>getFirst(descendingMap().entrySet(), null); } protected K standardLastKey() { Entry<K, V> entry = lastEntry(); <extra_id_0> throw new NoSuchElementException(); } else { return entry.getKey(); } } @Override