public static byte[] decompress(byte[] bytes) {
        if (bytes == null) {
            throw new NullPointerException("bytes is null");
        }

        int size = (int) Zstd.decompressedSize(bytes);
        byte[] decompressBytes = new byte[size];
        Zstd.decompress(decompressBytes, bytes);
        return decompressBytes;
    }
@Test
    public void test_decompress() {
        Assertions.assertThrows(NullPointerException.class, () -> {
            ZstdUtil.decompress(null);
        });
    }