hasPermission method
Checks if the app has permission to access location.
If the result is PermissionStatus.deniedForever, no dialog will be shown on requestPermission. Returns a PermissionStatus object.
Implementation
@override
Future<PermissionStatus> hasPermission() async {
final result = await _methodChannel!.invokeMethod('hasPermission');
return _parsePermissionStatus(result as int?);
}