public virtual DescribeAvailabilityOptionsResponse DescribeAvailabilityOptions(DescribeAvailabilityOptionsRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeAvailabilityOptionsRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeAvailabilityOptionsResponseUnmarshaller.Instance;return Invoke<DescribeAvailabilityOptionsResponse>(request, options);}