Ionic.Zip.ZipFile.AddOrUpdateDirectoryImpl C# (CSharp) 메소드

        private ZipEntry AddOrUpdateDirectoryImpl(string directoryName,
                                                  string rootDirectoryPathInArchive,
                                                  AddOrUpdateAction action)
        {
            if (rootDirectoryPathInArchive == null)
            {
                rootDirectoryPathInArchive = "";
            }

            return AddOrUpdateDirectoryImpl(directoryName, rootDirectoryPathInArchive, action, true, 0);
        }