public static Config getConfig(
            Configuration configuration, @Nullable HostAndPort externalAddress) {
        return getConfig(
                configuration,
                externalAddress,
                null,
                PekkoUtils.getForkJoinExecutorConfig(
                        ActorSystemBootstrapTools.getForkJoinExecutorConfiguration(configuration)));
    }
@Test
    void getConfigNormalizesHostName() {
        final Configuration configuration = new Configuration();
        final String hostname = "AbC123foOBaR";
        final int port = 1234;

        final Config config = PekkoUtils.getConfig(configuration, new HostAndPort(hostname, port));

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