public function getIContact($nb_icontact)
    {
        $retval = false;

        if (is_object($nb_icontact) && !($nb_icontact instanceof CNabuDataObject)) {
            throw new ENabuCoreException(
                ENabuCoreException::ERROR_UNEXPECTED_PARAM_CLASS_TYPE,
                array('$nb_icontact', get_class($nb_icontact))
            );
        }

        if ($nb_icontact !== null) {
            $nb_icontact_id = nb_getMixedValue($nb_icontact, NABU_ICONTACT_FIELD_ID);
            if (is_numeric($nb_icontact_id) || nb_isValidGUID($nb_icontact_id)) {
                $retval = $this->nb_icontact_list->getItem($nb_icontact_id);
            } elseif ($nb_icontact_id !== null && $nb_icontact_id !== false) {
                throw new ENabuCoreException(
                    ENabuCoreException::ERROR_UNEXPECTED_PARAM_VALUE,
                    array(print_r($nb_icontact, true), '$nb_icontact')
                );
            }
        }

        return $retval;
    }