Realm iOS：无法将’Dogs.Type’类型的值转换为预期的参数类型’T.Type’

import RealmSwift

class DBManager {

    class func getAllDogs() -> [Dog] {

        let realm = try! Realm()
        // COMPILER ERROR: Cannot Convert value of type 'Dogs.Type' to expected argument type 'T.Type'
        return realm.objects(Dog.self) 

    }

}

这是我的Dog.swift：

import Foundation
import RealmSwift

class Dog: Object {
  dynamic var firstName = ""
  dynamic var lastName = ""
  dynamic var dateOfBirth = ""
  dynamic var lastFourSsn = ""
  dynamic var currentLocation = ""
  dynamic var dog: NSData!
}

我收到此编译器错误：

Cannot Convert value of type ‘Dogs.Type’ to expected
argument type ‘T.Type’

好像我在这里遗漏了一些非常基本的东西 – 因为这主要是直接来自RealmSwift documentation的代码.我做错了什么？