code: public ODocument clusterStatus() {
      final ODocument response = sendRequest(OChannelBinaryProtocol.REQUEST_CLUSTER, new ODocument().field("operation", "status"),
          "Cluster status");
  
      OLogManager.instance().debug(this, "Cluster status %s", response.toJSON());
      return response;
    }
docs: Gets the cluster status.
  
  @return the JSON containing the current cluster structure