const UNFAVORITE = 'http://ostatus.org/schema/1.0/unfavorite';
const UNFOLLOW = 'http://ostatus.org/schema/1.0/unfollow';
const LEAVE = 'http://ostatus.org/schema/1.0/leave';
+ const UNTAG = 'http://ostatus.org/schema/1.0/untag';
// For simple profile-update pings; no content to share.
const UPDATE_PROFILE = 'http://ostatus.org/schema/1.0/update-profile';