text: public virtual DeregisterTransitGatewayMulticastGroupSourcesResponse DeregisterTransitGatewayMulticastGroupSources(DeregisterTransitGatewayMulticastGroupSourcesRequest request){var options = new InvokeOptions();options.RequestMarshaller = DeregisterTransitGatewayMulticastGroupSourcesRequestMarshaller.Instance;options.ResponseUnmarshaller = DeregisterTransitGatewayMulticastGroupSourcesResponseUnmarshaller.Instance;return Invoke<DeregisterTransitGatewayMulticastGroupSourcesResponse>(request, options);}