915             var zipFileName = fileSpecifications[0] as string;  in Create()
916             if (Path.GetExtension(zipFileName).Length == 0) {  in Create()
917                 zipFileName = Path.ChangeExtension(zipFileName, ".zip");  in Create()
922             if (overwriteFiles == Overwrite.Never && File.Exists(zipFileName)) {  in Create()
923                 Console.WriteLine("File {0} already exists", zipFileName);  in Create()
929             using (FileStream stream = File.Create(zipFileName)) {  in Create()
1130             var zipFileName = fileSpecs[0] as string;  in Test()
1131             if (Path.GetExtension(zipFileName).Length == 0) {  in Test()
1132                 zipFileName = Path.ChangeExtension(zipFileName, ".zip");  in Test()
1135             using (ZipFile zipFile = new ZipFile(zipFileName)) {  in Test()
1150             var zipFileName = fileSpecs[0] as string;  in Delete()
1151             if (Path.GetExtension(zipFileName).Length == 0) {  in Delete()
1152                 zipFileName = Path.ChangeExtension(zipFileName, ".zip");  in Delete()
1155             using (ZipFile zipFile = new ZipFile(zipFileName)) {  in Delete()
1166             var zipFileName = fileSpecs[0] as string;  in Add()
1167             if (Path.GetExtension(zipFileName).Length == 0) {  in Add()
1168                 zipFileName = Path.ChangeExtension(zipFileName, ".zip");  in Add()
1171             using (ZipFile zipFile = new ZipFile(zipFileName)) {  in Add()