name[web/request] deprecate user_callback
revisions#e8b9a3d23ad9 [web/request] deprecate user_callback, #d75a15158611 [web/request] deprecate user_callback, #995d605cb2e7 [web/request] deprecate user_callback
ticket#3567793 [ajax controller] deprecate "user callback" impl. [resolved, 3.19.0]
committer<not specified>
reviewercdevienne