/**
 * Returns the PSSH box associated with the given key system from the concatenated
 * list of PSSH boxes in the provided initData.
 *
 * @param uuid - The desired key system UUID
 * @param initData - 'cenc' initialization data. Concatenated list of PSSH boxes.
 * @returns The PSSH box ArrayBuffer corresponding to the given key system, or null if not found.
 *
 * @group DRM
 * @beta
 *
 * @example
 * {@includeCode ../../../test/drm/cenc/getPsshForKeySystem.test.ts#example}
 */
export declare function getPsshForKeySystem(uuid: string, initData: ArrayBuffer): ArrayBuffer | null;
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