How do I open a flatpak file on EOS 5.1.7?

Question

I have a file Program.flatpak. I can't find any way to open it.

Every google search I've found merely states that Elementary OS has flatpak, but gives no details about how or where or what that means.

I tried typing $ flatpak into console, but it yields no results.

So I tried installing $ sudo apt install flatpak and it says nothing has been updated.

Apparently flatpak is here -- somewhere -- but how do I make it open a flatpak file?

Answer 1

Found on Reddit of all places

$ flatpak install path/to/file

I'm going to put in a feature request to have this be something EOS handles on its own.