private bool IsOlderThanMaxFileAge() { if (_maxFileAgeOfPaketExeInMinutes <= 0) { return(true); } try { var lastModification = _fileProxy.GetLastWriteTime(_target); return(DateTimeProxy.Now > lastModification.AddMinutes(_maxFileAgeOfPaketExeInMinutes)); } catch (FileNotFoundException) { return(true); } }