code: public AtomixClusterBuilder withMulticastAddress(Address address) {
      config.getMulticastConfig().setGroup(address.address());
      config.getMulticastConfig().setPort(address.port());
      return this;
    }
docs: Sets the multicast address.
  <p>
  Multicast is disabled by default. To enable multicast, first use {@link #withMulticastEnabled()}.
  
  @param address the multicast address
  @return the cluster builder