I have an app that has been created and is available to be added to a site via the GUI ( Site Contents -> Your Apps. )
It is a simple document library (it was not created by me). I am attempting to add this "app" to the site via powershell. I can not for the life of me figure out how this is accomplished. I have been attempting to list the available "App" via Get-SPAppInstance, but this simple returns null, both at the site level and the site collection level.
Trying to run Install-SPApp "Doc LibName" also doesn't work.
I have tried checking via powershell if perhaps it shows up as a regular document library but it does not.
Does anyone have any ideas what I'm doing wrong? Please let me know what additional details are required.