BetterCms.Core.Services.Storage.FtpStorageService.DirectoryExists C# (CSharp) Метод

        private bool DirectoryExists(Uri uri)
        {
            CheckUri(uri);

            try
            {
                var absolutePath = ResolvePath(uri.AbsoluteUri);
                var serverUri = string.Format("{0}{1}", ftpRoot, absolutePath);
                var ftpRequest = CreateFtpRequest(serverUri);
                ftpRequest.Method = WebRequestMethods.Ftp.ListDirectoryDetails;

                try
                {
                    var response = (FtpWebResponse)ftpRequest.GetResponse();
                    response.Close();
                    return true;
                }
                catch (WebException ex)
                {
                    var response = (FtpWebResponse)ex.Response;
                    var statusCode = response.StatusCode;
                    response.Close();
                    if (statusCode == FtpStatusCode.ActionNotTakenFileUnavailable)
                    {
                        return false;
                    }
                    throw;
                }
            }
            catch (Exception e)
            {
                throw new StorageException(string.Format("Failed to check if object exists under {0}.", uri), e);
            }
        }