Get Class Of Active Window AHK

So, I was reading all through the documentation looking for a:
WinGetActiveClass
Since there is a WinGetTitle
And a WinGetClass


Turns out:
WinGetClass's behavior IS to get the class of the active window.

This sample code will display the class name of the active window
when you press the enter key:

enter::
{
 ;theClass = class of active window.
 WinGetClass, theClass, A
 msgBox %theClass%
}