You can now have external example files for derived classes (Efl.Ui.Button.SetText)
as well as for base classes (Efl.IText.SetText).
If both files are present, both examples are embedded in the docs. The more
examples the better!
Examples for classes in-between the hierarchy (Efl.Ui.Widget.SetText) are not
picked up. Might be worth examining in the future.