toJson method Null safety
Implementation
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = Map<String, dynamic>();
data['marginLeft'] = marginLeft;
data['marginBottom'] = marginBottom;
return data;
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = Map<String, dynamic>();
data['marginLeft'] = marginLeft;
data['marginBottom'] = marginBottom;
return data;
}