throw new Error("not implemented");
if (cont == null) return;  if (cont.isFocusCycleRoot (cont)) { FocusTraversalPolicy policy = cont.getFocusTraversalPolicy (); Component defaultComponent = policy.getDefaultComponent (cont); defaultComponent.requestFocusInWindow (); setGlobalCurrentFocusCycleRoot (cont); }
  public void downFocusCycle(Container cont)  {    throw new Error("not implemented");  }