Iterator iter = io_methods_by_mime_.values().iterator();
Iterator iter = values.iterator();
  public String[] getIOMethods()  {    Set all_methods = new HashSet();        Iterator iter = io_methods_by_mime_.values().iterator();    while (iter.hasNext())    {      Set methods = (Set) iter.next();      if (methods != null)      {        all_methods.addAll(methods);      }    }       String[] result = new String[all_methods.size()];        return (String[]) all_methods.toArray(result);  }