How to use the @converse/headless/converse-core.ROOM_FEATURES function in @converse/headless

renderRoomFeatures () {
                const features = this.chatroomview.model.features,
                      picks = _.pick(features.attributes, converse.ROOM_FEATURES),
                      iteratee = (a, v) => a || v;

                if (_.reduce(Object.values(picks), iteratee)) {
                    const el = this.el.querySelector('.chatroom-features');
                    el.innerHTML = tpl_chatroom_features(Object.assign(features.toJSON(), {__}));
                    this.setOccupantsHeight();
                }
                return this;
            },