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;
}