How do I show all files in the sidebar for Visual Studio Code

I know how to hide files from the sidebar in Visual Studio Code:

• How do I hide certain files from the sidebar in Visual Studio Code?

However there are some files that I would like to have hidden the majority of the time but also display occasionally.

With Visual Studio I can facilitate this workflow with the Solution Explorer's "Show All Files" button:

How can I achieve a similar workflow in Visual Studio Code?