code: public void setIsCoordinatingDiscoveryServer() {
          String instanceId = getId();
          if ((instanceId != null)
                  && (instanceId.equals(ApplicationInfoManager.getInstance()
                  .getInfo().getId()))) {
              isCoordinatingDiscoveryServer = Boolean.TRUE;
          } else {
              isCoordinatingDiscoveryServer = Boolean.FALSE;
          }
      }
docs: Sets a flag if this instance is the same as the discovery server that is
  return the instances. This flag is used by the discovery clients to
  identity the discovery server which is coordinating/returning the
  information.