ZeroInstall.Publish.Capture.SnapshotDiff.GetInstallCommands C# (CSharp) Method

        private static InstallCommands GetInstallCommands([NotNull] RegistryKey clientKey, [NotNull] string installationDir)
        {
            #region Sanity checks
            if (clientKey == null) throw new ArgumentNullException(nameof(clientKey));
            if (string.IsNullOrEmpty(installationDir)) throw new ArgumentNullException(nameof(installationDir));
            #endregion

            using (var installInfoKey = clientKey.OpenSubKey(DesktopIntegration.Windows.DefaultProgram.RegSubKeyInstallInfo))
            {
                if (installInfoKey == null) return default(InstallCommands);

                string reinstallArgs;
                string reinstall = IsolateCommand(installInfoKey.GetValue(DesktopIntegration.Windows.DefaultProgram.RegValueReinstallCommand, "").ToString(), installationDir, out reinstallArgs);

                string showIconsArgs;
                string showIcons = IsolateCommand(installInfoKey.GetValue(DesktopIntegration.Windows.DefaultProgram.RegValueShowIconsCommand, "").ToString(), installationDir, out showIconsArgs);

                string hideIconsArgs;
                string hideIcons = IsolateCommand(installInfoKey.GetValue(DesktopIntegration.Windows.DefaultProgram.RegValueHideIconsCommand, "").ToString(), installationDir, out hideIconsArgs);

                return new InstallCommands
                {
                    Reinstall = reinstall, ReinstallArgs = reinstallArgs,
                    ShowIcons = showIcons, ShowIconsArgs = showIconsArgs,
                    HideIcons = hideIcons, HideIconsArgs = hideIconsArgs
                };
            }
        }