@NonNull
  public static <T> SortedSet<T> sortedSetOf(Class<T> clazz) {
    assertIsNotParameterized(clazz, msg("sortedSetOf"));
    return treeSetOf(clazz);
  }
@NonNull
  public static <T> SortedSet<T> sortedSetOf(Class<T> clazz) {
    assertIsNotParameterized(clazz, msg("sortedSetOf"));
    return treeSetOf(clazz);
  }
@ NonNull public static < T > SortedSet < T > sortedSetOf ( Class < T > clazz ) { assertIsNotParameterized ( clazz , msg ( "sortedSetOf" ) ) ; return treeSetOf ( clazz ) ; }
///// sorted sets
///// sorted sets