我尝试通过房间持久性库将值保存到数据库。我的SettingsValueModelConverter有问题，缺少一些东西。如何以最佳方式保存SettingsKeyContract对象？日志:SettingsModelError:(14,1)error:Cannotfigureouthowtosavethisfieldintodatabase.Youcanconsideraddingatypeconverterforit.代码:objectSETTING_CONS{constvalTABLE="Content_Setting"constvalID="uid"constvalKEY="key