code: public static int getNode(BayesianReasonerShanksAgent agent, String nodeName)
              throws ShanksException {
          return ShanksAgentBayesianReasoningCapability.getNode(
                  agent.getBayesianNetwork(), nodeName);
      }
docs: Return the complete node
  
  @param agent
  @param nodeName
  @return the ProbabilisticNode object
  @throws ShanksException