throw new InternalError("not implemented");
if (in == null || a == null) return;  Object key = in.readObject(); Object val = in.readObject(); while (key != null && val != null) { Object staticKey = staticAttributeKeys.get(key); Object staticVal = staticAttributeKeys.get(val);  if (staticKey != null) key = staticKey; if (staticVal != null) val = staticVal;  a.addAttribute(key, val); key = in.readObject(); val = in.readObject(); }
  public static void readAttributeSet(ObjectInputStream in, MutableAttributeSet a)    throws ClassNotFoundException, IOException, NotImplementedException  {    throw new InternalError("not implemented");  }