HA full backup saves Add-On Data, but does it save local add-ons?

I made my first add-on, a node app. It’s local (for now) and I am wondering if the contents of the /addons folder are backed up up as part of a full backup. The backup docs say that a “full back-up” backs up “add-on data” but are not clear as to whether or not that includes local add-on “project files” (the Dockerfile, source code, so on).

Thank you!