Source-built versions of JAR files

[niccokunzmann]

I would like to know how to include source-build libraries or include libraries in a proper way.
I read this:

Binary dependencies such as JAR files have to be replaced by source-built versions or used from a trusted repository (see manual). - documentation

• Where can I find the manual?
• Can we link to the manual in this location in the documentation?
  • Where is the source code of the docs?

Context:

• Here, I can see how this might be intended:
  androidsoft-lib-utils@3b08e29969c71f7f599d7db9316d3e7871387ddb

Related:

• Preferred way to add a jar dependency built from source (not helping for JAR files)

[Licaon_Kter]

@niccokunzmann

Where can I find the manual?

There is none.

@niccokunzmann

Here, I can see how this might be intended:

That’s srclibs:

srclibs: [n:]a@r,[n:]b@r1,…

Comma-separated list of source libraries or Android projects. Each item is of the form name@rev where name is the predefined source library name and rev is the revision or tag to use in the respective source control.
(read more in the link below)
…

Build Metadata Reference | F-Droid - Free and Open Source Android App Repository

These are stored here: srclibs · master · F-Droid / Data · GitLab