static MouseMover dm_mouseMover() {
  MouseMover.listenToGlobalKeyPresses = false;
  if (mouseMover_instance == null) swing {
    if (mouseMover_instance == null) {
      mouseMover();
      ownResource(vmBus_onMessage('keyDown, r { mouseMover_instance.haveInterference() }));
    }
  }
  ret mouseMover_instance;
}

Began life as a copy of #1010720