code: public <R extends JmxRequest> Object handleRequest(JsonRequestHandler<R> pRequestHandler, R pJmxReq)
              throws MBeanException, ReflectionException, AttributeNotFoundException, InstanceNotFoundException, NotChangedException {
          AttributeNotFoundException attrException = null;
          InstanceNotFoundException objNotFoundException = null;
  
          for (MBeanServerConnection conn : getMBeanServers()) {
              try {
                  return pRequestHandler.handleRequest(conn, pJmxReq);
              } catch (InstanceNotFoundException exp) {
                  // Remember exceptions for later use
                  objNotFoundException = exp;
              } catch (AttributeNotFoundException exp) {
                  attrException = exp;
              } catch (IOException exp) {
                  throw new IllegalStateException("I/O Error while dispatching",exp);
              }
          }
          if (attrException != null) {
              throw attrException;
          }
          // Must be there, otherwise we would not have left the loop
          throw objNotFoundException;
      }
docs: Handle a single request
  
  @param pRequestHandler the handler which can deal with this request
  @param pJmxReq the request to execute
  @return the return value
  
  @throws MBeanException
  @throws ReflectionException
  @throws AttributeNotFoundException
  @throws InstanceNotFoundException