code: @Deprecated
    public AtomixClusterBuilder setBroadcastInterval(Duration interval) {
      GroupMembershipProtocolConfig protocolConfig = config.getProtocolConfig();
      if (protocolConfig instanceof HeartbeatMembershipProtocolConfig) {
        ((HeartbeatMembershipProtocolConfig) protocolConfig).setHeartbeatInterval(interval);
      }
      return this;
    }
docs: Sets the reachability broadcast interval.
  <p>
  The broadcast interval is the interval at which heartbeats are sent to peers in the cluster.
  
  @param interval the reachability broadcast interval
  @return the cluster builder
  @deprecated since 3.0.2