/// <summary>
/// Write header to result file
/// </summary>
private void WriteHeadersToResult()
{
_taskQueue.AddNotBufferedTask(TaskWriteObjectToFile.GetInstance(StringSource.GetInstance($"Calc SHA256 for each block of file: {_fileSource.Name}")));
_taskQueue.AddNotBufferedTask(TaskWriteObjectToFile.GetInstance(StringSource.GetInstance(string.Empty)));
}