public function getAttachments(bool $force = false) : CNabuIContactProspectAttachmentList
    {
        if ($this->nb_attachment_list->isEmpty() || $force) {
            $this->nb_attachment_list->clear();
            $this->nb_attachment_list->merge(CNabuIContactProspectAttachment::getAttachmentsForProspect($this));
        }

        return $this->nb_attachment_list;
    }