def parse(cls, fptr, offset, length):
        """Parse UUIDList box.

        Parameters
        ----------
        f : file
            Open file object.
        offset : int
            Start position of box in bytes.
        length : int
            Length of the box in bytes.

        Returns
        -------
        UUIDListBox
            Instance of the current UUID list box.
        """
        num_bytes = offset + length - fptr.tell()
        read_buffer = fptr.read(num_bytes)

        num_uuids, = struct.unpack_from('>H', read_buffer)

        ulst = []
        for j in range(num_uuids):
            uuid_buffer = read_buffer[2 + j * 16:2 + (j + 1) * 16]
            ulst.append(UUID(bytes=uuid_buffer))

        return cls(ulst, length=length, offset=offset)
Parse UUIDList box.

        Parameters
        ----------
        f : file
            Open file object.
        offset : int
            Start position of box in bytes.
        length : int
            Length of the box in bytes.

        Returns
        -------
        UUIDListBox
            Instance of the current UUID list box.