REST API: toggle spam on a changeset comment (BB-7904)

I've tried to implement spam endpoint but I keep getting 500 errors, even when I use REST API console.

Request: PUT https://api.bitbucket.org/1.0/repositories/vimishor/test3/changesets/a9f15cfdfb68436f324dd980eefdbb9d0dc3887c/comments/spam/195770

This endpoint was removed without updating the docs ?