guava/src/com/google/common/collect/ImmutableRangeMap.java
@SuppressWarnings("unchecked")
  public static <K extends Comparable<?>, V> ImmutableRangeMap<K, V> of() {
    return (ImmutableRangeMap<K, V>) EMPTY;
  }
@SuppressWarnings("unchecked")
  public static <K extends Comparable<?>, V> ImmutableRangeMap<K, V> of() {
    return (ImmutableRangeMap<K, V>) EMPTY;
  }
@ SuppressWarnings ( "unchecked" ) public static < K extends Comparable < ? > , V > ImmutableRangeMap < K , V > of ( ) { return ( ImmutableRangeMap < K , V > ) EMPTY ; }
Returns an empty immutable range map.
Returns an empty immutable range map .