static getFrameData_(data) {
    /*
     * Frame ID       $xx xx xx xx (four characters)
     * Size           $xx xx xx xx
     * Flags          $xx xx
     */
    const type = String.fromCharCode(data[0], data[1], data[2], data[3]);
    const size = shaka.util.Id3Utils.readSize_(data, 4);

    // skip frame id, size, and flags
    const offset = 10;

    return {
      type,
      size,
      data: data.subarray(offset, offset + size),
    };
  }
@param {Uint8Array} data
@return {shaka.extern.MetadataRawFrame}
@private