/**
 *
 * @param {number[]} destination
 * @param {number} destination_offset
 * @param {BVH} bvh
 * @param {number} root
 * @returns {number} number of collected elements
 */
export function bvh_collect_user_data(destination: number[], destination_offset: number, bvh: BVH, root: number): number;
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