@NSManaged属性不能具有初始值

Question

我正在尝试将我的api数据存储在核心数据实体中。我也有一些自定义数据类型数组。因此，我使这些属性可转换。像这样，

现在，当我创建实体的NSManagedObject类时，它向我显示错误

  

@NSManaged属性不能具有初始值。

我的SingleChat+CoreDataProperties.swift班是这个，

extension SingleChat {

    @nonobjc public class func fetchRequest() -> NSFetchRequest<SingleChat> {
        return NSFetchRequest<SingleChat>(entityName: "SingleChat")
    }

    @NSManaged public var name: String?
    @NSManaged public var roomSID: String?
    @NSManaged public var isGroup: Bool
    @NSManaged public var lastMessage: String?
    @NSManaged public var lastMsgTime: String?
    @NSManaged public var lastMsgTimeActual: String?
    @NSManaged public var profilePic: String?
    @NSManaged public var lastMsgRead: Bool
    @NSManaged public var unReadMsgsCount: Int16
    @NSManaged public var actualNameFor_1_2_1_chat: String?
    @NSManaged public var isNewGroup: Bool
    @NSManaged public var members = [TCHMember]()
    @NSManaged public var messages = [TCHMessage]()
    @NSManaged public var twChannelObj: TCHChannel?
    @NSManaged public var group_info: [String:JSON]?

}

我是核心数据的新手，不知道如何获取自定义数据类型。我如何解决此问题，我想将数据存储在成员，消息和group_info中。这些是数组。