code: public static <K,V> SortedMap<K,V> asSynchronized(SortedMap<K,V> self) {
          return Collections.synchronizedSortedMap(self);
      }
docs: A convenience method for creating a synchronized SortedMap.
  
  @param self a SortedMap
  @return a synchronized SortedMap
  @see java.util.Collections#synchronizedSortedMap(java.util.SortedMap)
  @since 1.0