Why are there no traces of Inception v3 model helper classifiers in Keras?

When using the Inception v3 model in Keras, neither the network graph nor the model.summary () indicates the presence of auxiliary classifiers (as in Szegedy et al ..

Why is that? Is Keras still using the correct architecture but hiding this specifics from the user? If so, how can we configure the upper layers from the network? Indeed, we may want the 3 classifiers to have different architectures.

Thank!