Is it possible to have a Dynamo script that can Purge Unused for all families in a project?

[Marcel_Rijsmus]

I found this

Purge multiple documents and set starting view

Hi, I’m creating a script to open multiple files and purge them and then set a loaded titleblock family into the document after the purge. I’m not sure is this is possible. Been searching the forum awhile but can only find FileLoadFamily node that seems like its opening the document a second time from the node that is opening the document to purge. Not sure how to load in a family to an existing background open document if that makes sense. I think the application close worked even though it s…