Should be listed "Is property group"?
I arrived to the page of the predefined and special property "Is property group", but it isn't in this page. Should it be listed here? Or is any reason to not be?
Thanks in advance!
The simple reason is that I have not yet had time to document it. Indeed an extra page for this special property is still to be created on this wiki. After that this special property will show up in the list. If you would like to give it a shot ...
I can try to help with this task as far as my abilities allow me. I am going to create the page to document this property, based on the Github's PR you shared. If you check the page it will be created and find some error in how it has been documented or something else, tell me to learn and solve it.