public Request<DescribeEcsClustersRequest> marshall(
      DescribeEcsClustersRequest describeEcsClustersRequest) {

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

    Request<DescribeEcsClustersRequest> request =
        new DefaultRequest<DescribeEcsClustersRequest>(describeEcsClustersRequest, "AWSOpsWorks");
    request.addHeader("X-Amz-Target", "OpsWorks_20130218.DescribeEcsClusters");

    request.setHttpMethod(HttpMethodName.POST);

    request.setResourcePath("");

    try {
      final StructuredJsonGenerator jsonGenerator =
          SdkJsonProtocolFactory.createWriter(false, "1.1");

      jsonGenerator.writeStartObject();

      com.amazonaws.internal.SdkInternalList<String> ecsClusterArnsList =
          (com.amazonaws.internal.SdkInternalList<String>)
              describeEcsClustersRequest.getEcsClusterArns();
      if (!ecsClusterArnsList.isEmpty() || !ecsClusterArnsList.isAutoConstruct()) {
        jsonGenerator.writeFieldName("EcsClusterArns");
        jsonGenerator.writeStartArray();
        for (String ecsClusterArnsListValue : ecsClusterArnsList) {
          if (ecsClusterArnsListValue != null) {
            jsonGenerator.writeValue(ecsClusterArnsListValue);
          }
        }
        jsonGenerator.writeEndArray();
      }
      if (describeEcsClustersRequest.getStackId() != null) {
        jsonGenerator.writeFieldName("StackId").writeValue(describeEcsClustersRequest.getStackId());
      }
      if (describeEcsClustersRequest.getNextToken() != null) {
        jsonGenerator
            .writeFieldName("NextToken")
            .writeValue(describeEcsClustersRequest.getNextToken());
      }
      if (describeEcsClustersRequest.getMaxResults() != null) {
        jsonGenerator
            .writeFieldName("MaxResults")
            .writeValue(describeEcsClustersRequest.getMaxResults());
      }

      jsonGenerator.writeEndObject();

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

    return request;
  }
  public Request<DeleteInstanceRequest> marshall(DeleteInstanceRequest deleteInstanceRequest) {

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

    Request<DeleteInstanceRequest> request =
        new DefaultRequest<DeleteInstanceRequest>(deleteInstanceRequest, "AWSOpsWorks");
    request.addHeader("X-Amz-Target", "OpsWorks_20130218.DeleteInstance");

    request.setHttpMethod(HttpMethodName.POST);

    request.setResourcePath("");

    try {
      final StructuredJsonGenerator jsonGenerator =
          SdkJsonProtocolFactory.createWriter(false, "1.1");

      jsonGenerator.writeStartObject();

      if (deleteInstanceRequest.getInstanceId() != null) {
        jsonGenerator
            .writeFieldName("InstanceId")
            .writeValue(deleteInstanceRequest.getInstanceId());
      }
      if (deleteInstanceRequest.getDeleteElasticIp() != null) {
        jsonGenerator
            .writeFieldName("DeleteElasticIp")
            .writeValue(deleteInstanceRequest.getDeleteElasticIp());
      }
      if (deleteInstanceRequest.getDeleteVolumes() != null) {
        jsonGenerator
            .writeFieldName("DeleteVolumes")
            .writeValue(deleteInstanceRequest.getDeleteVolumes());
      }

      jsonGenerator.writeEndObject();

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

    return request;
  }