Lite design question: Is it not an optimizer?

[aazzolini]

I'd like to undestand for these wrappers whether there's a particular reason that each of them is implemented differently

Optimizer -> decorates the original optimizer, but doesn't sub-class "Optimizer".
Module -> decorates the forward function of the original Module, and sub-classes Module.
DataLoader -> directly sub-classes DataLoader, changing it's functionality .

Would it make sense to standardize this a little? Also do these classes need to be "private"?

https://github.com/PyTorchLightning/pytorch-lightning/blob/c614cf0c3d7a252bfd01ff8516f9f42f1c1b055a/pytorch_lightning/lite/wrappers.py#L30