def METHOD_NAME(self):
    test_vectors = [
        (0, 'a0'),
        (23, 'b7'),
        ((2 ** 8) - 1, 'b8ff'),
        ((2 ** 16) - 1, 'b9ffff'),
        ((2 ** 32) - 1, 'baffffffff'),
        ((2 ** 64) - 1, 'bbffffffffffffffff'),
    ]
    for val, header_hex in test_vectors:
        header = unhexlify(header_hex)
        self.assertEqual(create_map_header(val), header)
    with self.assertRaises(NotImplementedError):
        create_map_header(2 ** 64)