Static var in protocol and reflection

Doing basic reflection in Swift, I encountered a couple of road blocks. The first has to do with static var in a protocol. Isn't it the same as requesting the implementation to define a class var? The second has to do with returning the name of the class when it's passed as type AnyClass? Is this the right thing to do?

protocol Nameable {
    static var name: String { get }
}

func nameForClass(cls: AnyClass) -> String {
    var name = ""
    if (cls as? Nameable != nil) {
        name = (cls.self as! Nameable).name
    }
    if (name.isEmpty) {
        name = NSStringFromClass(cls.self)
    }
    return name
}

class A : Nameable {
    static var name: String {
        return "ClassA"
    }
}

class B : Nameable {
    static var name: String {
        return ""
    }
}


println(nameForClass(A.self) // Should print "ClassA"
println(nameForClass(B.self) // Should print "B"