text: public virtual CreateDirectConnectGatewayAssociationProposalResponse CreateDirectConnectGatewayAssociationProposal(CreateDirectConnectGatewayAssociationProposalRequest request){var options = new InvokeOptions();options.RequestMarshaller = CreateDirectConnectGatewayAssociationProposalRequestMarshaller.Instance;options.ResponseUnmarshaller = CreateDirectConnectGatewayAssociationProposalResponseUnmarshaller.Instance;return Invoke<CreateDirectConnectGatewayAssociationProposalResponse>(request, options);}