I have been trying to understand how Android Studio IDE works by trying out a few things. I imported one of the sample projects –– Android DataLayer –– from Google repo, and it came with a few configured modules. Then I deleted the .idea folder and wanted to open the project again, but in the sidebar panel, all I see is emptiness.

![enter image description here](https://i.stack.imgur.com/8zDFy.png)

What can I do to recreate the project?