code: protected void setServerRefreshIndicator(OperationResult<?> opResults, RESP response) {
          Optional<String> processState = opResults.getOptionalProcessState();
          if (processState.isPresent()) {
              try {
                  response.setServerRefreshIndicator(ServerRefreshIndicator.fromValue(processState.get().toUpperCase()));
              } catch (Exception e) {
                  log.warnf("Cannot set server refresh indicator - process state is invalid", e);
              }
          }
      }
docs: Given the results of an operation, this will set the {@link ServerRefreshIndicator}
  found in those results in the given response.
  
  @param opResults contains the DMR results
  @param response the response message