orldX The position that is looked for.
     * @param {number} worldMaxDist The maximum distance allowed from worldX to
     *     the event.
     * @param {number} loY Lower Y bound of the search interval in view space.
     * @param {number} hiY Upper Y bound of the search interval in view space.
     * @param {Selection} selection Selection to which to add hits.
     */
    addClosestEventToSelection(
        worldX, worldMaxDist, loY, hiY, selection) {
    },

    addClosestInstantEventToSelection(instan