Class-Only Protocols in Swift

Question

I want some of my classes (not all) to conform using \'Class-Only Protocols\' from docs. What I am doing is

protocol RefreshData: class, ClassA, ClassB
{
    fun         


        

Answer 1

protocol RefreshData : class
{
    func updateController()
}

class ClassA : RefreshData
{
    func updateController() {}
}

class ClassB : RefreshData
{
    func updateController() {}
}