code: @Override
      public DevAttrHistory[] read_attribute_history_2(final String attributeName, final int maxSize) throws DevFailed {
          MDC.setContextMap(contextMap);
          xlogger.entry();
          checkInitialization();
          deviceMonitoring.startRequest("read_attribute_history_2");
          // TODO read_attribute_history_2
          return new DevAttrHistory[0];
      }
docs: read an attribute history. IDL 2 version. The history is filled only be
  attribute polling
  
  @param attributeName The attribute to retrieve
  @param maxSize       The history maximum size returned
  @throws DevFailed