Admin SDK中存在的资源在AdminDirectory界面(请参见https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/google-apps-script/apis/directory_v1.d.ts#L1037-L1056)中被标记为可选。如果这些都是已定义的资源,为什么会出现这种情况? 这是因为typescript checker在引用像AdminDirectory.Domains.list("my_customer").domains这样的东西时会抛出"Object is