throws AmazonServiceException, AmazonClientException {
/* Create execution context */
ExecutionContext executionContext = createExecutionContext(requestCancelWorkflowExecutionRequest);
AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
awsRequestMetrics.startEvent(Field.RequestMarshallTime.name());
Request<RequestCancelWorkflowExecutionRequest> request = new RequestCancelWorkflowExecutionRequestMarshaller().marshall(requestCancelWorkflowExecutionRequest);
awsRequestMetrics.endEvent(Field.RequestMarshallTime.name());
JsonResponseHandler<Void> responseHandler = new JsonResponseHandler<Void>(null);
invoke(request, responseHandler, executionContext);
}