internal static AddProgressEventArgs Completed(string archiveName)
 {
     var x = new AddProgressEventArgs(archiveName, ZipProgressEventType.Adding_Completed);
     return x;
 }
 internal static AddProgressEventArgs AfterEntry(string archiveName, ZipEntry entry, int entriesTotal)
 {
     var x = new AddProgressEventArgs(archiveName, ZipProgressEventType.Adding_AfterAddEntry);
     x.EntriesTotal = entriesTotal;
     x.CurrentEntry = entry;
     return x;
 }