Test if object is on screen

Can someone explain to me where is, and how to use, that new condition to test if an object is on screen?

In Project panel, expand Functions/Behaviours, and click on “Search for new extension”:


Scroll down the list of tags, and click on Screen. Select “Object ‘Is On Screen’ Detection”:

Install in project:

Add as behviour ato an object:

Click on “Add condition” in events editor, and search for “Is On Screen” (top left of the panel):

Select the Object that need to be checked: