public static Config getConfig(
            Configuration configuration, @Nullable HostAndPort externalAddress) {
        return getConfig(
                configuration,
                externalAddress,
                null,
                PekkoUtils.getForkJoinExecutorConfig(
                        ActorSystemBootstrapTools.getForkJoinExecutorConfiguration(configuration)));
    }
@Test
    void getConfigHandlesIPv6Address() {
        final String ipv6AddressString = "2001:db8:10:11:12:ff00:42:8329";
        final Config config =
                PekkoUtils.getConfig(new Configuration(), new HostAndPort(ipv6AddressString, 1234));

        assertThat(config.getString("pekko.remote.classic.netty.tcp.hostname"))
                .isEqualTo(NetUtils.unresolvedHostToNormalizedString(ipv6AddressString));
    }