type property Null safety

QChatSystemNotificationType? type
@JsonKey(fromJson: _systemNotificationTypeFromJson, toJson: __systemNotificationTypeToJson), read / write

通知类型, 参考QChatSystemMsgType

Implementation

@JsonKey(
    fromJson: _systemNotificationTypeFromJson,
    toJson: __systemNotificationTypeToJson)
QChatSystemNotificationType? type;