是不是需要在境界

我嘗試讀取JSON和創建境界更新的對象，所以我的代碼：是不是需要在境界

func workWithFileJSON() { 
     //local file JSON 
      let file = Bundle.main.path(forResource: "MobileDbSchema", ofType: "json")! 
      let url = URL(fileURLWithPath: file) 
      let jsonData = NSData(contentsOf: url)! 

      //Parce JSON 
      let json = try! JSONSerialization.jsonObject(with: jsonData as Data, options: []) 

      try! realm.write { 

//Create data from JSON to our objects 
      realm.create(DataRoot.self, value: json, update: true) 


      }  
    }

與類文件：我的第一次運行後

import Foundation 
import RealmSwift 

class DataRoot: Object { 
    dynamic var id = 0 
    dynamic var name = "" 
    let transport_type = List<Transport_type>() 

    override class func primaryKey() -> String? { 
     return "id" 
} 
} 

class Transport_type: Object { 
    dynamic var id = 0 
    dynamic var name = "" 
    let routes = List<Routes>() 

    override class func primaryKey() -> String? { 
     return "id" 
} 
} 

class Routes: Object { 
    dynamic var id = 0 
    dynamic var name = "" 
    let directions = List<Directions>() 

    override class func primaryKey() -> String? { 
     return "id" 
} 
} 


class Directions: Object { 
    dynamic var id = 0 
    dynamic var name = "" 
    dynamic var dayIdFrom = 0 
    dynamic var dayIdTo = 0 
    let stops = List<Stops>() 

    override class func primaryKey() -> String? { 
     return "id" 
} 
} 

class Stops: Object { 
     dynamic var id = 0 
     dynamic var busStop: BusStop? 
     let timetable = List<Timetable>() 

     override class func primaryKey() -> String? { 
      return "id" 
     } 
    } 

class BusStop: Object { 
     dynamic var id = 0 
     dynamic var name = "" 
     dynamic var descript = "" 

     override class func primaryKey() -> String? { 
      return "id" 
     } 
} 

class Timetable: Object { 

     dynamic var hour = 0 
     dynamic var minute = 0 
     dynamic var group_index = 0 
     dynamic var notes = "" 

}

我看到好的數據在境界：