public function getProspect($nb_prospect)
    {
        $retval = false;

        if (is_numeric($nb_prospect_id = nb_getMixedValue($nb_prospect, NABU_ICONTACT_PROSPECT_FIELD_ID))) {
            $retval = $this->nb_icontact_prospect_list->getItem($nb_prospect_id);
        }

        return $retval;
    }