Which face_align method is used to align InsightFace Model Zoo Datasets

To create the dataset bin files used to evaluate and train the Face ID models, which of the alignment methods in face_align.py were used? I don't see a main or where this is imported and called on a dataset?

Datasets in question: https://github.com/deepinsight/insightface/wiki/Dataset-Zoo

File with align methods but no main: https://github.com/deepinsight/insightface/blob/master/python-package/insightface/utils/face_align.py#L27

Thanks for your help and clarification,
Aidan