code: void addAll(Hashset set) {
      for (Enumeration e = set.table.keys(); e.hasMoreElements();)
        add(e.nextElement());
    }
  
    /**
     * Removes all the objects from this set.
     */
    void clear() {
      table.clear();
    }
  
    /**
     * Get an enumeration will all the objects from this set.
     * @return an enumeration with all the objects from this set.
     */
    Enumeration members() {
      return table.keys();
    }
  }
docs: Adds all the objects from another set to this set - union.
  @param set The other set.