public static IPMappingAddress ipv6MappingAddress(IpPrefix ip) {
        return new IPMappingAddress(ip, MappingAddress.Type.IPV6);
    }
@Test
    public void testIpv6MappingAddressMethod() {
        IpPrefix ipv6 = IpPrefix.valueOf("fe80::1/64");
        MappingAddress mappingAddress = MappingAddresses.ipv6MappingAddress(ipv6);
        IPMappingAddress ipMappingAddress =
                checkAndConvert(mappingAddress,
                                MappingAddress.Type.IPV6,
                                IPMappingAddress.class);
        assertThat(ipMappingAddress.ip(), is(equalTo(ipv6)));
    }