private async Task <Stream> UpdateCachedFile(string fileName, byte[] cachedFileContent, ServerServiceClient serverServiceClient, string cachedFileLocation)
{
List <Chunk> cachedChunks = RabinKarpAlgorithm.Slice(cachedFileContent);
DifferenceChunkDto[] differenceChunkDtos = await serverServiceClient.GetUpdatedChunksAsync(fileName, cachedChunks.Select(CachedChunkDtoMapper.Map).ToArray());
byte[] newFileContent = ConstructContentOfTheUpdateFile(differenceChunkDtos, cachedChunks, fileName);
System.IO.File.WriteAllBytes(cachedFileLocation, newFileContent);
return(new MemoryStream(newFileContent));
}