public function getProspects(CNabuIContactProspectStatusType $nb_status_type = null) : CNabuIContactProspectList
    {
        $this->nb_icontact_prospect_list->clear();
        $this->nb_icontact_prospect_list->merge(CNabuIContactProspect::getProspectsForIContact($this, $nb_status_type));

        return $this->nb_icontact_prospect_list;
    }