The source files for the Developer Documentation is no longer located under /Applications/Xcode.app/Contents/Developer/Documentation/DocSets as answered in thread 25544.
So where is it now (on macOS 10.15 w. Xcode 11)?
Where is the Xcode documentation located on macOS?
What are you trying to accomplish? Is the documentation not visible when accessing from the Xcode Help menu?
I want to autogenerate some documentation for some cross-language bindings I'm making, and so it would be nice to have access to the documentation in raw form.
@madsmtm did manage to find it?