toJson method
Implementation
Map<String, dynamic> toJson() => {
"contourPoints": contourPoints == null ? [] : List<dynamic>.from(contourPoints!.map((x) => List<dynamic>.from(x.map((x) => List<dynamic>.from(x.map((x) => x)))))),
"contours": contours == null ? [] : List<dynamic>.from(contours!.map((x) => List<dynamic>.from(x.map((x) => x)))),
"textRect": textRect == null ? [] : List<dynamic>.from(textRect!.map((x) => x)),
};