get back pre-processed data with AutoML

[skunkwerk]

I know with regular use of ludwig, you can get the pre-processed data back like this:

(self.evaluation_statistics, training_statistics, self.preprocessed_data, output_directory) = self.model.experiment(**self.train_kwargs)
OR
train_stats, preprocessed_data, output_directory = self.model.train(**self.train_kwargs)

but I don't see a way to do that if I use autoML, which just returns auto_train_results.
Any ideas?

thanks