paperOut method
Invokes the 'paperOut' method on the platform's method channel to check paper status.
Returns an int?, where 0 indicates paper is present, any other value indicates paper is out, or null if the operation fails or encounters an error.
Implementation
@override
/// Invokes the 'paperOut' method on the platform's method channel to check paper status.
///
/// Returns an [int?], where 0 indicates paper is present, any other value indicates
/// paper is out, or null if the operation fails or encounters an error.
Future<int?> paperOut() async {
final result = await methodChannel.invokeMethod<int?>('paperOut');
return result;
}