This method returns the event handler for the given key event. The key event
lookup is dependent on all key modifiers so these must be a perfect match. This will
return the response to the event formatted as a string. (Example:
"onAltEnterPressed();")
var box = scene.getBoxById("genericItem1");
if (box)
{
shell.print("Event Handler Is: " + box.getKeyEventActions("keyUp", "ENTER", false, true, false));
}