How do I add auto-complete comment in Xcode (Swift)?

Question

How can I add text to autocomplete like below, the \"Tells the element to activate itself...\" part,

This is what I have,

But the \"This is a t

Answer 1

What you are trying to accomplish is unfortunately not possible anymore.

The reason is that the autocomplete popover does not show comments from class files but instead searches in a separate doc-set generated by Apple.

I added a more complete description here: https://stackoverflow.com/a/43982094/1415898