I found the c++ docs for geometrymsgs in diamondback: http://docs.ros.org/diamondback/api/geometrymsgs/html/index.html.

When I replace "diamondback" in the URL with "hydro", it's a stub: http://docs.ros.org/hydro/api/geometry_msgs/html/index.html

After lots of searching, I can't seem to find the hydro docs in any other location.

Do the docs I'm looking for exist? If so, where?