text: public virtual AddRoleToDBClusterResponse AddRoleToDBCluster(AddRoleToDBClusterRequest request){var options = new InvokeOptions();options.RequestMarshaller = AddRoleToDBClusterRequestMarshaller.Instance;options.ResponseUnmarshaller = AddRoleToDBClusterResponseUnmarshaller.Instance;return Invoke<AddRoleToDBClusterResponse>(request, options);}