Qiyu constructor
Implementation
factory Qiyu() {
if (_instance == null) {
final MethodChannel methodChannel =
const MethodChannel('plugins.lazyyuuuuu.io/qiyu');
final EventChannel eventChannel =
const EventChannel('plugins.lazyyuuuuu.io/event_qiyu');
_instance = Qiyu.private(methodChannel, eventChannel);
}
return _instance;
}