src/Models/ElementModel.php
public function section($load = false)
    {
        $fields = $this->getFields();

        /** @var SectionModel $sectionModel */
        $sectionModel = static::sectionModel();

        return $load
            ? $sectionModel::query()->getById($fields['IBLOCK_SECTION_ID'])
            : new $sectionModel($fields['IBLOCK_SECTION_ID']);
    }
public function section($load = false)
    {
        $fields = $this->getFields();

        /** @var SectionModel $sectionModel */
        $sectionModel = static::sectionModel();

        return $load
            ? $sectionModel::query()->getById($fields['IBLOCK_SECTION_ID'])
            : new $sectionModel($fields['IBLOCK_SECTION_ID']);
    }
Get element direct section as model object.

@param bool $load

@return false|SectionModel