text: public virtual DescribeClusterSubnetGroupsResponse DescribeClusterSubnetGroups(DescribeClusterSubnetGroupsRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeClusterSubnetGroupsRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeClusterSubnetGroupsResponseUnmarshaller.Instance;return Invoke<DescribeClusterSubnetGroupsResponse>(request, options);}