onDetach method

  1. @mustCallSuper
void onDetach()


void onDetach() {
  // Keeping this here, because if we leave this on HasWidgetsOverlay
  // and somebody overrides this and forgets to call the stream close
  // we can face some leaks.

  // Also we only do this in release mode, otherwise when using hot reload
  // the controller would be closed and errors would happen
  if (this is HasWidgetsOverlay && kReleaseMode) {
    (this as HasWidgetsOverlay).widgetOverlayController.close();

  if (this is KeyboardEvents) {