text: public virtual StartDeliveryStreamEncryptionResponse StartDeliveryStreamEncryption(StartDeliveryStreamEncryptionRequest request){var options = new InvokeOptions();options.RequestMarshaller = StartDeliveryStreamEncryptionRequestMarshaller.Instance;options.ResponseUnmarshaller = StartDeliveryStreamEncryptionResponseUnmarshaller.Instance;return Invoke<StartDeliveryStreamEncryptionResponse>(request, options);}