public Task<DescribeOrderableDBInstanceOptionsResponse> DescribeOrderableDBInstanceOptionsAsync(DescribeOrderableDBInstanceOptionsRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new DescribeOrderableDBInstanceOptionsRequestMarshaller();
var unmarshaller = DescribeOrderableDBInstanceOptionsResponseUnmarshaller.Instance;
return InvokeAsync<DescribeOrderableDBInstanceOptionsRequest,DescribeOrderableDBInstanceOptionsResponse>(request, marshaller,
unmarshaller, cancellationToken);
}