code: public static <T> SortedSet<T> minus(SortedSet<T> self, Object removeMe) {
          return (SortedSet<T>) minus((Set<T>) self, removeMe);
      }
docs: Create a SortedSet composed of the elements of the first SortedSet minus the given element.
  
  @param self     a SortedSet object
  @param removeMe the element to remove from the SortedSet
  @return the resulting SortedSet
  @since 2.4.0