processImage method
Detects VisionText from a GoogleVisionImage.
Implementation
Future<VisionText> processImage(GoogleVisionImage visionImage) async {
assert(!_isClosed);
_hasBeenOpened = true;
final reply = await GoogleVision.channel.invokeMapMethod<String, dynamic>(
'TextRecognizer#processImage',
<String, dynamic>{
'handle': _handle,
'options': <String, dynamic>{},
}..addAll(visionImage._serialize()),
);
return VisionText._(reply!);
}