What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind bug
/kind task

/kind feature

What does this PR do / why do we need it:
api docs for doxygen

Which issue(s) this PR fixes:

Fixes #I446CP:api docs for doxygen

Special notes for your reviewers: