@Override
  public boolean equals(Object obj) {
    if (this == obj) return true;
    if (obj == null) return false;

    if (obj instanceof ListActivityTypesRequest == false) return false;
    ListActivityTypesRequest other = (ListActivityTypesRequest) obj;

    if (other.getDomain() == null ^ this.getDomain() == null) return false;
    if (other.getDomain() != null && other.getDomain().equals(this.getDomain()) == false)
      return false;
    if (other.getName() == null ^ this.getName() == null) return false;
    if (other.getName() != null && other.getName().equals(this.getName()) == false) return false;
    if (other.getRegistrationStatus() == null ^ this.getRegistrationStatus() == null) return false;
    if (other.getRegistrationStatus() != null
        && other.getRegistrationStatus().equals(this.getRegistrationStatus()) == false)
      return false;
    if (other.getNextPageToken() == null ^ this.getNextPageToken() == null) return false;
    if (other.getNextPageToken() != null
        && other.getNextPageToken().equals(this.getNextPageToken()) == false) return false;
    if (other.getMaximumPageSize() == null ^ this.getMaximumPageSize() == null) return false;
    if (other.getMaximumPageSize() != null
        && other.getMaximumPageSize().equals(this.getMaximumPageSize()) == false) return false;
    if (other.isReverseOrder() == null ^ this.isReverseOrder() == null) return false;
    if (other.isReverseOrder() != null
        && other.isReverseOrder().equals(this.isReverseOrder()) == false) return false;
    return true;
  }
  public Request<ListActivityTypesRequest> marshall(
      ListActivityTypesRequest listActivityTypesRequest) {
    if (listActivityTypesRequest == null) {
      throw new AmazonClientException("Invalid argument passed to marshall(...)");
    }

    Request<ListActivityTypesRequest> request =
        new DefaultRequest<ListActivityTypesRequest>(
            listActivityTypesRequest, "AmazonSimpleWorkflow");
    String target = "SimpleWorkflowService.ListActivityTypes";
    request.addHeader("X-Amz-Target", target);
    request.addHeader("Content-Type", "application/x-amz-json-1.0");
    request.setHttpMethod(POST);

    try {
      StringWriter stringWriter = new StringWriter();
      JSONWriter jsonWriter = new JSONWriter(stringWriter);
      jsonWriter.object();

      if (listActivityTypesRequest.getDomain() != null) {
        jsonWriter.key("domain").value(listActivityTypesRequest.getDomain());
      }
      if (listActivityTypesRequest.getName() != null) {
        jsonWriter.key("name").value(listActivityTypesRequest.getName());
      }
      if (listActivityTypesRequest.getRegistrationStatus() != null) {
        jsonWriter
            .key("registrationStatus")
            .value(listActivityTypesRequest.getRegistrationStatus());
      }
      if (listActivityTypesRequest.getNextPageToken() != null) {
        jsonWriter.key("nextPageToken").value(listActivityTypesRequest.getNextPageToken());
      }
      if (listActivityTypesRequest.getMaximumPageSize() != null) {
        jsonWriter.key("maximumPageSize").value(listActivityTypesRequest.getMaximumPageSize());
      }
      if (listActivityTypesRequest.isReverseOrder() != null) {
        jsonWriter.key("reverseOrder").value(listActivityTypesRequest.isReverseOrder());
      }

      jsonWriter.endObject();

      String snippet = stringWriter.toString();
      byte[] content = snippet.getBytes("UTF-8");
      request.setContent(new StringInputStream(snippet));
      request.addHeader("Content-Length", Integer.toString(content.length));
      return request;
    } catch (Throwable t) {
      throw new AmazonClientException("Unable to marshall request to JSON: " + t.getMessage(), t);
    }
  }