Juneau 7.2.0 is close to release but there is still a considerable amount of documentation to be written. The Javadocs on the classes themselves should be mostly complete, but much remains to be written in the overview document.
I've uploaded a preview of the Javadocs so far here:
http://juneau.apache.org/site/apidocs_preview/index.html
I just uploaded new sections related to the new OpenAPI HTTP Part support here:
http://juneau.apache.org/site/apidocs_preview/overview-summary.html#juneau-marshall.OpenApiDetails
Anywhere you see "TODO(7.2.0)" should be complete before release.