How do I determine what tab is referred to in the ui.tab object that is passed to the beforeLoad method?

How do I determine what tab is referred to in the ui.tab object that is passed to the beforeLoad method?

I am still having a very difficult time trying to use the documentation to learn this library.  I now know that I need to be looking at the 10.x ui lib doc.  In there it says I can use the ui.tab of the ui that is passed in, but when I look to see what properties are in the Object it just gives me a general discussion of a jQuery object.

I am a Java programmer, not a js programmer and I am trying to use these functions without getting too deep into js.

Any thoughts or ideas are appreciated.