close method
Release resources used by this detector.
Implementation
Future<void> close() {
if (!_hasBeenOpened) _isClosed = true;
if (_isClosed) return Future<void>.value();
_isClosed = true;
return FirebaseVision.channel.invokeMethod<void>(
'FaceDetector#close',
<String, dynamic>{'handle': _handle},
);
}