How to create second desktop entry for preview and stable android studio on Ubuntu

I used Create Desktop Entry from Android Studio Preview, which replaced the ~/.local/share/applications/jetbrains-studio.desktop of my stable version.

Then I copied that file to ~/.local/share/applications/jetbrains-studio-preview.desktop.

The icon was still green, so I downloaded a yellow one and used it in the .desktop file:

I also edited the .desktop file to suffix the name property with Preview

Then I ran the stable version to Create Desktop Entry to restore it.

Unity launcher didn't refresh the preview version icon and name straight away (it's ok after a reboot) and I couldn't figure out which one was which after typing Android Studio in the launcher. So I ran the jetbrains-studio-preview.desktop from its directory (first setting it to be executable), and then I locked it to the launcher. The result: