              ``None`` if the model did not exist in Faceswap prior to Tensorflow 2
          """
          return None
  
      def add_history(self, loss: List[float]) -> None:
          """ Add the current iteration's loss history to :attr:`_io.history`.
  
          Called from the trainer after each iteration, for tracking loss drop over time between
          save iterations.
  
 
</s> remove     def _collate_and_store_loss(self, loss: List[float]) -> List[float]:
 </s> add     def _collate_and_store_loss(self, loss: T.List[float]) -> T.List[float]: </s> remove     def _print_loss(self, loss: List[float]) -> None:
 </s> add     def _print_loss(self, loss: T.List[float]) -> None: </s> remove     def _log_tensorboard(self, loss: List[float]) -> None:
 </s> add     def _log_tensorboard(self, loss: T.List[float]) -> None: </s> remove     def _mask_inputs(self) -> Optional[list]:
 </s> add     def _mask_inputs(self) -> T.Optional[list]: </s> remove     def _get_save_averages(self) -> List[float]:
 </s> add     def _get_save_averages(self) -> T.List[float]:
    def add_history(self, loss: T.List[float]) -> None:
              ``None`` if the model did not exist in Faceswap prior to Tensorflow 2
          """
          return None
  
    def add_history(self, loss: T.List[float]) -> None:
          """ Add the current iteration's loss history to :attr:`_io.history`.
  
          Called from the trainer after each iteration, for tracking loss drop over time between
          save iterations.
  
keep keep keep keep replace keep keep keep keep keep
 Remove plaidML support (#1325)

* Remove PlaidML reference from readme files

* Remove AMD option from installers

* remove amd requirements and update setup.py

* remove plaidml test from CI workflow

* gpustats: remove plaidml backend

* plaid removals:
  - faceswap.py - python version check
  - setup.cfg - plaidml typing ignore
  - lib.keras_utils - All plaid code
  - lib.launcher.py - All plaidml checks and configuration

* remove tf2.2 specific code from GUI event reader

* lib.model - remove all plaidml implementations

* plugins.extract - remove plaidml code

* plugins.train remove plaidml code

* lib.convert - remove plaidml code

* tools.model: remove plaidml code

* Remove plaidML tests from unit tests

* remove plaidml_utils and docsting cleanups

* Remove plaidML refs from configs

* fix keras imports 
plugins/train/model/_base/model.py