def list(self, service_rec=None, host_rec=None, hostfilter=None):
        """
        List a specific service or all services

        :param service_rec: t_services.id
        :param host_rec: t_hosts.id
        :param hostfilter: Valid hostfilter or None
        :return: [(svc.t_services.id, svc.t_services.f_hosts_id, svc.t_hosts.f_ipaddr,
             svc.t_hosts.f_hostname, svc.t_services.f_proto,
             svc.t_services.f_number, svc.t_services.f_status, svc.t_services.f_name,
             svc.t_services.f_banner), ...]
        """
        return self.send.service_list(service_rec, host_rec, hostfilter)
List a specific service or all services

        :param service_rec: t_services.id
        :param host_rec: t_hosts.id
        :param hostfilter: Valid hostfilter or None
        :return: [(svc.t_services.id, svc.t_services.f_hosts_id, svc.t_hosts.f_ipaddr,
             svc.t_hosts.f_hostname, svc.t_services.f_proto,
             svc.t_services.f_number, svc.t_services.f_status, svc.t_services.f_name,
             svc.t_services.f_banner), ...]