【Swift/Realm】@Persistedプロパティラッパーとは？役割や意味

@propertyWrapper
public struct Persisted where Value : _Persistable
extension Persisted: Decodable where Value: Decodable
extension Persisted: Encodable where Value: Encodable
extension Persisted: OptionalCodingWrapper where Value: ExpressibleByNilLiteral

class Notification: Object ,ObjectKeyIdentifiable{
    @Persisted(primaryKey: true) var id:UUID = UUID()
    @Persisted  var body:String 
    @Persisted  var date:Date = Date()
}

class Notification: Object ,ObjectKeyIdentifiable{
    @Persisted(primaryKey: true) var id:UUID = UUID()
    @Persisted  var body:String
    var date:Date = Date() // これは保存されなくなる
}

class Person: Object {
    @Persisted  var name: String
    @Persisted  var age: Int
    @Persisted  var address: String?
}

class Notification: Object ,ObjectKeyIdentifiable{
    @Persisted(primaryKey: true) var id:UUID = UUID()
    @Persisted  var body:String 
    @Persisted  var date:Date = Date()
}

class Travel :Object,ObjectKeyIdentifiable {
  @Persisted(primaryKey: true) var id:ObjectId
  @Persisted  var name:String = "
  @Persisted  var persistedShare:Bool = true
  var share:Bool = false
}

let travelTable = realm.objects(Travel.self).filter("share == true")

"Invalid keypath 'share': Property 'share' not found in object of type 'Travel'"

print(travel)

Travel {
	id = 647e83deecf046e7543d728b;
	name = name;
  persistedShare = true;
}

print(travel.share)
// false