This is only an example of what i am trying to do:

```
class Test{
    class func b(){
        a()
    }

    func a(){
        println("A")
    }
}

```

And in a other swift file i do: 

```
Test.b()

```

But i get an error when i call `a()` in my `Test` class it says: `missing argument in call`

If i write `a(` it suggest me to call the method like this: `a(Test)`, `Test` for the name of the class. So i try giving it the parameter `self` but it doesn't works