I was going through the tf2_serving_v2 notebook and i noticed that methods that were mentioned in text cell above were actually from tf2_serving notebook. It led to some confusion in the start and once i had gone through both of these notebooks i could tell the difference, maybe you can look into this and update it. I will add some snippets from tf2_serving_v2 notebook for your reference.
I was going through the tf2_serving_v2 notebook and i noticed that methods that were mentioned in text cell above were actually from tf2_serving notebook. It led to some confusion in the start and once i had gone through both of these notebooks i could tell the difference, maybe you can look into this and update it. I will add some snippets from tf2_serving_v2 notebook for your reference.