AMP_Post_Template::build_html_tag_attributes PHP Method

    private function build_html_tag_attributes()
    {
        $attributes = array();
        if (function_exists('is_rtl') && is_rtl()) {
            $attributes['dir'] = 'rtl';
        }
        $lang = get_bloginfo('language');
        if ($lang) {
            $attributes['lang'] = $lang;
        }
        $this->add_data_by_key('html_tag_attributes', $attributes);
    }