text: public virtual DeleteDirectConnectGatewayAssociationProposalResponse DeleteDirectConnectGatewayAssociationProposal(DeleteDirectConnectGatewayAssociationProposalRequest request){var options = new InvokeOptions();options.RequestMarshaller = DeleteDirectConnectGatewayAssociationProposalRequestMarshaller.Instance;options.ResponseUnmarshaller = DeleteDirectConnectGatewayAssociationProposalResponseUnmarshaller.Instance;return Invoke<DeleteDirectConnectGatewayAssociationProposalResponse>(request, options);}