code: @Override
    protected ServiceRefAmp lookupService(String address)
    {
      String prefix = "cluster://";
  
      if (address.startsWith(prefix)) {
        int p = address.indexOf('/', prefix.length() + 1);
        
        if (p > 0) {
          String cluster = address.substring(prefix.length(), p);
          String path = address.substring(p);
      
          return lookupService(cluster, path);
        }
      }
      
      ServiceRefAmp serviceRef = services().service(address);
      
      return serviceRef;
    }
docs: /*
  public void onNonce(String algorithm, String nonce)
  {
  OutHamp out = (OutHamp) getConnection();
  
  out.onNonce(algorithm, nonce);
  }