/guava/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ImmutableSortedMap.java
return sortedDelegate.lastKey ( ) ;
@CheckForNull public K firstKey() { return sortedDelegate.firstKey(); } @CheckForNull public K lastKey() { <extra_id_0> } @CheckForNull K higher(K k) { Iterator<K> iterator = keySet().tailSet(k).iterator(); while (iterator.hasNext()) { K tmp = iterator.next();