Where is the code for data augmentation, please?

[xiaoguaishoubaobao]

1. Where is the code for data augmentation, please?
   I would like to add some new data enhancement techniques such as TransMix or mixup.
   How do I implement this? like:
   https://github.com/Beckschen/TransMix
2. I want to add an attention mechanism, how should I do it?