code: public static <T> List<T> order( RandSeq randSeq, Collection<T> collection)
      {
      return reorderIf( randSeq, new ArrayList<T>( collection));
      }
docs: Applies the given <code>randSeq</code> to rearrange the given collection in a random order.
  If <code>randSeq</code> is <code>null</code>, returns the collection in normal order.