public static function appendItemsToArrayObj(&$arrObj, $key, $values)
    {
        if (! $arrObj instanceof \ArrayObject) {
            return null;
        }

        $arr = $arrObj->getArrayCopy();

        $commonArrKeyValues =
            Common::isArrayKeyExists($key, $arr)
                ? $arr[$key]
                : [];

        $arr[$key] = array_merge($commonArrKeyValues, $values);

        return $arrObj = self::createArrayObject($arr);
    }