private static byte[] CompressFileLZMA(byte[] fileToCompress)
        {
            if (fileToCompress == null)
            {
                return(fileToCompress);
            }

            if (fileToCompress.Length > 100000000) //100MB
            {
                return(null);
            }

            return(SevenZipHelper.Compress(fileToCompress));
        }