public static void Validate(this RemoveClientCertArgs args)
 {
     if (!args.IsPackageSourceSettingProvided())
     {
         throw new CommandLineArgumentCombinationException(string.Format(CultureInfo.CurrentCulture,
                                                                         Strings.Error_PropertyCannotBeNullOrEmpty,
                                                                         nameof(PackageSource)));
     }
 }