text: public virtual DescribeReplicationGroupsResponse DescribeReplicationGroups(DescribeReplicationGroupsRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeReplicationGroupsRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeReplicationGroupsResponseUnmarshaller.Instance;return Invoke<DescribeReplicationGroupsResponse>(request, options);}