public function getAreaLayoutColumnOffsetEditClass()
    {
        /*
         * @var ThemeGridLayout $this->arLayout
         */
        $gf = $this->arLayout->getThemeGridFrameworkObject();
        if (is_object($gf)) {
            $class = $gf->getPageThemeGridFrameworkColumnAdditionalClasses();
            if ($class) {
                $class .= ' ';
            }

            $class .= $gf->getPageThemeGridFrameworkColumnClassForSpan($this->arLayoutColumnOffset);

            return $class;
        }
    }