toJson method
Implementation
@override
Map<String, dynamic> toJson({ToJsonConfiguration? config}) {
config = config ?? ToJsonConfiguration();
Map<String, dynamic> obj = <String, dynamic>{};
obj["_type"] = "Line";
obj["text"] = text;
obj["confidence"] = confidence;
obj["roi"] = roi.map((it) => {"x": it.x, "y": it.y}).toList();
obj["words"] = words.map((it) => it.toJson(config: config)).toList();
return obj;
}