toJson method
转换为Map格式数据
Implementation
Map<String, dynamic> toJson() {
final map = <String, dynamic>{
'route': route,
'id': id,
'code': code,
'desc': desc,
};
if (data != null) map['data'] = data;
if (ucid != null) map['ucid'] = ucid;
if (word != null) map['word'] = word;
if (sign != null) map['sign'] = sign;
return map;
}