init method
Configure Dynamsoft Label Recognizer. Returns 0 if successful.
Implementation
Future<int> init(String key) async {
int ret = 0;
try {
LabelRecognizer.license = key;
} catch (e) {
print(e);
ret = -1;
}
_recognizer = await handleThenable(LabelRecognizer.createInstance());
return ret;
}