public IAsyncResult BeginDescribeJobFlows(DescribeJobFlowsRequest request, AsyncCallback callback, object state)
{
var marshaller = new DescribeJobFlowsRequestMarshaller();
var unmarshaller = DescribeJobFlowsResponseUnmarshaller.Instance;
return BeginInvoke<DescribeJobFlowsRequest>(request, marshaller, unmarshaller,
callback, state);
}