Developer Documentation: SDK, API

Can anyone point me in the right direction to find any online (or downloadable) documentation about developing in openHAB? I’m looking for something like this (Android package index): which would cover the openHAB software itself, as well as any API documentation as well, available classes, objects, methods, etc for scripting…

I saw this:,, etc, but its not what I’m looking for.

Thank you!

The old ESH (Eclipse Smart Home) posted the Javadocs here, but this is out of date. IDK if there’s an openHAB version of this anymore. Would be nice if there was…

Ah, interesting

The openHAB REST API is available by installing the restdocs user interface addon.