Issue of enum description

[wuxudong]

For a common enum in swift3, I can print its name using following code.

enum definition

public enum Foo : Int {
    case F1
}

following code will get F1 in console

print(Foo.F1)

But when I try to print enums defined in Charts

I can only get HorizontalAlignment in console, which center is expected.

 print(Legend.HorizontalAlignment.center)

get Form in console， which circle is expected.

  print(Legend.Form.circle)

Why is that?

[wuxudong]

I see @objc