public static Criterion matchIPProtocol(short proto) {
        return new IPProtocolCriterion(proto);
    }
@Test
    public void testMatchIpProtocolMethod() {
        Criterion matchIPProtocol = Criteria.matchIPProtocol(protocol1);
        IPProtocolCriterion ipProtocolCriterion =
                checkAndConvert(matchIPProtocol,
                                Criterion.Type.IP_PROTO,
                                IPProtocolCriterion.class);
        assertThat(ipProtocolCriterion.protocol(), is(equalTo(protocol1)));
    }