GenericObject: Object

Sale: Generic Object  // This class includes a primary key called "id"

override func newItem<T:GenericObject>(ofType itemType: T.Type) -> T {
    let dictionary = self.getDictionary()
    let newItem = T.init()
    newItem.updateWithDictionary(dict: dictionary)
    print("Type: (type(of: newItem)) - Object: (newItem)")
    return newItem
}

let newObject = object.newItem(ofType: Sale.self)
self.realm.add(newObject, update: true)

Type: Sale - Object: Sale { ....

Type: Sale - Object: GenericObject { ....