/// <summary>
/// Register ILanguageGenerator as default langugage generator.
/// </summary>
/// <param name="botAdapter">botAdapter to add services to.</param>
/// <param name="resourceExplorer">resourceExporer to provide to LanguageGenerator.</param>
/// <param name="languageGenerator">LanguageGenerator to use.</param>
/// <param name="messageGenerator">(OPTIONAL) Default is TextMessageActivityGenerator(). </param>
/// <returns>botAdapter.</returns>
public static BotAdapter UseLanguageGeneration(this BotAdapter botAdapter, ResourceExplorer resourceExplorer, ILanguageGenerator languageGenerator, IActivityGenerator messageGenerator = null)
{
DeclarativeTypeLoader.AddComponent(new LanguageGenerationComponentRegistration());
botAdapter.Use(new RegisterClassMiddleware <LanguageGeneratorManager>(new LanguageGeneratorManager(resourceExplorer ?? throw new ArgumentNullException(nameof(resourceExplorer)))));
botAdapter.Use(new RegisterClassMiddleware <ILanguageGenerator>(languageGenerator ?? throw new ArgumentNullException(nameof(languageGenerator))));
botAdapter.UseMessageActivityGeneration(messageGenerator);
return(botAdapter);
}