inceptionresnetv2 problem with scalingfactorlayer

I am trying to use a inceptionresnetv2 for transfer learning, and I can't find the scalingfactorlayer(helperNnetInceptionresnetv2LayerScalingFactorLayer) in inceptionresnetv2 ,I need some help.

Regards

[Walter Roberson]

I wonder if https://www.mathworks.com/matlabcentral/answers/459479-error-using-trainnetwork-in-deep-learning is relevant?