def unpublicize_exploration(committer_id, exploration_id):
 _unpublicize_activity(committer_id, exploration_id, feconf.ACTIVITY_TYPE_EXPLORATION)

def unpublicize_exploration ( committer_id , exploration_id ) : _unpublicize_activity ( committer_id , exploration_id , feconf . ACTIVITY_TYPE_EXPLORATION )
unpublicizes an exploration .