docs: public void marshall(RegisterInstanceRequest registerInstanceRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (registerInstanceRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(registerInstanceRequest.getStackId(), STACKID_BINDING);
              protocolMarshaller.marshall(registerInstanceRequest.getHostname(), HOSTNAME_BINDING);
              protocolMarshaller.marshall(registerInstanceRequest.getPublicIp(), PUBLICIP_BINDING);
              protocolMarshaller.marshall(registerInstanceRequest.getPrivateIp(), PRIVATEIP_BINDING);
              protocolMarshaller.marshall(registerInstanceRequest.getRsaPublicKey(), RSAPUBLICKEY_BINDING);
              protocolMarshaller.marshall(registerInstanceRequest.getRsaPublicKeyFingerprint(), RSAPUBLICKEYFINGERPRINT_BINDING);
              protocolMarshaller.marshall(registerInstanceRequest.getInstanceIdentity(), INSTANCEIDENTITY_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }