Yep. We're sorta making this up as we go along, but right now it's looking like 'locate' element/functions return a locator. element functions use locate to return the element itself, and then the most common uses are exposed as helper functions.

In this case, I think locate can be renamed to `get_tab`, or `get_clickable_tab` or something. Then a select_tab function would be nice, which clicks the given tab button if it isn't already clicked.

What do you think, @mfalesni? @psav?