class C1 : Prot {
    typealias Element = Int
    var p: Int
    func foo()
    subscript(_ index: Int) -> Int { get }
    subscript(index i: Float) -> Int { get }
}

extension cake.C1Alias {
}

enum MyEnum : Int {
    case Blah
}

protocol Prot {
    associatedtype Element
    var p: Int { get }
    func foo()
}

extension Prot where Self.Element == Int {
    func extfoo()
}

func genfoo<T1 : Prot, T2 : cake.C1 where T1.Element == Int, T2.Element == T1.Element>(x ix: T1, y iy: T2)


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