public Task<DescribeReservedDBInstancesResponse> DescribeReservedDBInstancesAsync(DescribeReservedDBInstancesRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new DescribeReservedDBInstancesRequestMarshaller();
var unmarshaller = DescribeReservedDBInstancesResponseUnmarshaller.Instance;
return InvokeAsync<DescribeReservedDBInstancesRequest,DescribeReservedDBInstancesResponse>(request, marshaller,
unmarshaller, cancellationToken);
}