docs: protected <T, A> void handleMessage(final Channel channel, final DataInput message, final ManagementRequestHeader header, ManagementRequestHandler<T, A> handler) throws IOException {
          final ActiveOperation<T, A> support = getActiveOperation(header);
          if(support == null) {
              throw ProtocolLogger.ROOT_LOGGER.responseHandlerNotFound(header.getBatchId());
          }
          handleMessage(channel, message, header, support, handler);
      }