disconnectPrinter method
Closes the active printer connection.
Returns true on success. Throws a descriptive string on failure.
Implementation
Future<bool?> disconnectPrinter() async {
try {
final bool? result = await _channel.invokeMethod('disconnectPrinter');
return result;
} on PlatformException catch (e) {
throw 'Failed to disconnect printer: ${e.message}';
}
}