PowerArgs.ArgRequiredConditionalHook.TryPreventExceptionWithPrompt C# (CSharp) Method

        private bool TryPreventExceptionWithPrompt(ArgHook.HookContext context)
        {
            if (parent.PromptIfMissing && ArgHook.HookContext.Current.Definition.IsNonInteractive == false)
            {

                var cli = new CliHelper();

                ITabCompletionHandler tabHandler;
                IHighlighterConfigurator highlighterConfigurator;

                if (TabCompletionHandlerType.TryCreate<ITabCompletionHandler>(out tabHandler))
                {
                    cli.Reader.TabHandler.TabCompletionHandlers.Add(tabHandler);
                }

                if (HighlighterConfiguratorType.TryCreate<IHighlighterConfigurator>(out highlighterConfigurator))
                {
                    cli.Reader.Highlighter = new SimpleSyntaxHighlighter();
                    highlighterConfigurator.Configure(cli.Reader.Highlighter);
                }

                cli.Reader.UnregisterHandler(ConsoleKey.Escape);
                cli.Reader.RegisterHandler(KeyHandler.FromAction((searchReaderContext) =>
                {
                    TabCompletion tabCompletionInfo;
                    if (context.Definition.IsNonInteractive == false &&
                        context.Definition.Metadata.TryGetMeta<TabCompletion>(out tabCompletionInfo) &&
                        tabCompletionInfo.REPL == true)
                    {
                        // if this is an interactive REPL then continue the REPL in this case as the user may have changed their mind about taking
                        // this action - Note there are two places in this file that have this logic
                        throw new REPLContinueException();
                    }
                    else
                    {
                        throw new MissingArgException("The argument '" + context.CurrentArgument.DefaultAlias + "' is required", new ArgumentNullException(context.CurrentArgument.DefaultAlias));
                    }
                }, ConsoleKey.Escape));

                context.ArgumentValue = cli.PromptForLine("Enter value for " + context.CurrentArgument.DefaultAlias);
                context.CurrentArgument.Populate(context);
                return true;
            }
            else
            {
                return false;
            }
        }