The code has been migrated from the originating projects. The JavaDoc documentation therefore has mirgrated with he code. However, non-JavaDoc documentation will be migrated as part of this release cycle, including examples.
As a reference, a prepartory landing page for developers was created last year https://github.com/jonahkichwacoders/org.eclipse.dataset. This needs to be migrated to Eclipse January with the new names and updates.