toJson method
Implementation
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = <String, dynamic>{};
data["key"] = key;
data["isRadio"] = isRadio;
data["title"] = title;
data["type"] = type;
data["desc"] = desc;
data["titleSuffix"] = titleSuffix;
data["items"] = items.map((e) => e.toJson()).toList();
return data;
}