text: public virtual DescribeVirtualGatewaysResponse DescribeVirtualGateways(DescribeVirtualGatewaysRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeVirtualGatewaysRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeVirtualGatewaysResponseUnmarshaller.Instance;return Invoke<DescribeVirtualGatewaysResponse>(request, options);}