public class RealmDefaults : RealmSwift.Object {

    public class func purge()

    public static func write(@noescape block: (Self) -> Void)

    public class func schemaVersion() -> UInt64

    public class func defaultsName() -> String

    public class func filePath() -> String

    public class func configuration() -> RealmSwift.Realm.Configuration
}

import RealmDefaults

class MyAccount: RealmDefaults {

    dynamic var name: String?
    dynamic var age: Int = 0
    dynamic var phoneNumber: String?

    override class func schemaVersion() -> UInt64 {
        return 3
    }
}

MyAccount.write { account in
    account.name = "muukii"
    account.age = 25
    account.phoneNumber = "080-0000-0000"
}

print(MyAccount.instance.name) // -> muukii
print(MyAccount.instance.age) // 25
print(MyAccount.instance.phoneNumber) // 080-0000-0000