toJson method
Implementation
Map toJson(){
Map _result = {};
if (!landmarks.isEmpty) {
var list = [];
for (var item in landmarks) list.add(item!.toJson());
_result.addAll({"landmarks": list});
}
if (rect != null) _result.addAll({"rect": rect!.toJson()});
if (cropImage != null) _result.addAll({"cropImage": cropImage});
if (rotationAngle != null) _result.addAll({"rotationAngle": rotationAngle});
return _result;
}