public function getRowScope(array $rowData)
    {
        if (isset($rowData[self::COL_CATEGORY]) && strlen(trim($rowData[self::COL_CATEGORY]))) {
            return self::SCOPE_DEFAULT;
        } elseif (empty($rowData[self::COL_STORE])) {
            return self::SCOPE_NULL;
        } else {
            return self::SCOPE_STORE;
        }
    }