if ((buttons & InputEvent.BUTTON1_MASK) == 0 && (buttons & InputEvent.BUTTON2_MASK) == 0 && (buttons & InputEvent.BUTTON3_MASK) == 0) throw new IllegalArgumentException ("Robot: mouseRelease:" + " invalid button mask");  peer.mouseRelease (buttons);  if (waitForIdle) waitForIdle ();  if (autoDelay > 0) delay (autoDelay);
  public void mouseRelease(int buttons)  {  }