public ListJobsResponse listJobs(ListJobsRequest request) {
    try {
      ListJobsResponse r = EndpointHelper.createResponse(ListJobsResponse.class, request);
      r.setJobs(jobDao.findJobs(request.getWorkflowId(), request.getJobState()));
      return r;

    } catch (Exception e) {
      return EndpointHelper.createErrorResponse(ListJobsResponse.class, request, e);
    }
  }
  public Request<ListJobsRequest> marshall(ListJobsRequest listJobsRequest) {

    if (listJobsRequest == null) {
      throw new SdkClientException("Invalid argument passed to marshall(...)");
    }

    Request<ListJobsRequest> request =
        new DefaultRequest<ListJobsRequest>(listJobsRequest, "AmazonSnowball");
    request.addHeader("X-Amz-Target", "AWSIESnowballJobManagementService.ListJobs");

    request.setHttpMethod(HttpMethodName.POST);

    request.setResourcePath("");

    try {
      final StructuredJsonGenerator jsonGenerator = protocolFactory.createGenerator();

      jsonGenerator.writeStartObject();

      if (listJobsRequest.getMaxResults() != null) {
        jsonGenerator.writeFieldName("MaxResults").writeValue(listJobsRequest.getMaxResults());
      }
      if (listJobsRequest.getNextToken() != null) {
        jsonGenerator.writeFieldName("NextToken").writeValue(listJobsRequest.getNextToken());
      }

      jsonGenerator.writeEndObject();

      byte[] content = jsonGenerator.getBytes();
      request.setContent(new ByteArrayInputStream(content));
      request.addHeader("Content-Length", Integer.toString(content.length));
      request.addHeader("Content-Type", protocolFactory.getContentType());
    } catch (Throwable t) {
      throw new SdkClientException("Unable to marshall request to JSON: " + t.getMessage(), t);
    }

    return request;
  }