Keras: How to use fit_generator with multiple outputs of different type

Question

In a Keras model with the Functional API I need to call fit_generator to train on augmented images data using an ImageDataGenerator. The problem is my model has two outputs:

Answer 1

The best way to achieve this seems to be to create a new generator class expanding the one provided by Keras that parses the data augmenting only the images and yielding all the outputs.