registerController method
Implementation
void registerController(LdSubmitController controller) {
_controllers.add(controller);
postEvent('ext.liquid_flutter.submit.controllers', {
"controllers": _controllers.map((e) => e.toMap()).toList(),
});
_subscriptions.add(controller.stateStream.listen((state) {
postEvent('ext.liquid_flutter.submit.state', {
"controller": SubmitControllerDto.fromLdSubmitController(controller).toMap(),
});
}));
}