OK, I have come across this article from Jeffrey Wang:
Seems like this function could soon offer up some invaluable insight!
But, it is “hidden” in the August 2022 Desktop release, and therefore is not ready for normal use… yet, but hopefully soon!
There are a couple of known bugs and, more importantly, the work for intellisense support in the DAX formula bar has not been completed. Therefore if you try the function today, you won’t see it on the suggestion list and, if you type the function name yourself, you will see the red squiggly line underlying the function.