Inpsyde\MultilingualPress\Module\AlternativeLanguageTitleInAdminBar\ServiceProvider::register PHP Method

    public function register(Container $container)
    {
        $container['multilingualpress.alternative_language_title_customizer'] = function (Container $container) {
            return new AdminBarCustomizer($container['multilingualpress.alternative_language_titles']);
        };
        $container['multilingualpress.alternative_language_titles'] = function () {
            return new AlternativeLanguageTitles();
        };
    }