static AutoCloseable vmBus_onMessage(fS msg, final VF1<S> onMessage) {
  ret tempAdd(vm_busListeners_live(), voidfunc(S _msg, O arg) {
    if (eq(msg, _msg))
      callF(onMessage, arg);
  });
}

static AutoCloseable vmBus_onMessage(S msg, Runnable onMessage) {
  ret vmBus_onMessage(msg, main.<S> runnableToVF1(onMessage));
}