public static EthMappingAddress ethMappingAddress(MacAddress mac) {
        return new EthMappingAddress(mac);
    }
@Test
    public void testEthMappingAddressMethod() {
        MacAddress mac = MacAddress.valueOf("00:00:00:00:00:01");
        MappingAddress mappingAddress = MappingAddresses.ethMappingAddress(mac);
        EthMappingAddress ethMappingAddress =
                checkAndConvert(mappingAddress,
                                MappingAddress.Type.ETH,
                                EthMappingAddress.class);
        assertThat(ethMappingAddress.mac(), is(equalTo(mac)));
    }