  import inspect
  import sys
  
  from keras import backend as K
  from keras.optimizers import Optimizer
  from keras.utils import get_custom_objects
  
  
  class AdaBelief(Optimizer):
      """AdaBelief optimizer.
 
</s> remove from keras.utils import get_custom_objects
 </s> add from tensorflow.keras.optimizers import (  # noqa pylint:disable=no-name-in-module,unused-import,import-error
    Adam, Nadam, RMSprop)

from lib.utils import get_keras_custom_objects as get_custom_objects </s> remove from lib.utils import get_backend
 </s> add from lib.utils import get_backend, get_keras_custom_objects as get_custom_objects </s> remove from keras.utils import get_custom_objects
 </s> add  </s> remove from keras.utils import get_custom_objects

from lib.utils import get_backend
 </s> add  </s> remove import tensorflow.keras.backend as K
 </s> add import tensorflow.keras.backend as K  # pylint:disable=no-name-in-module,import-error
from keras.optimizers import Optimizer, Adam, Nadam, RMSprop  # noqa pylint:disable=unused-import
  import inspect
  import sys
  
  from keras import backend as K
from keras.optimizers import Optimizer, Adam, Nadam, RMSprop  # noqa pylint:disable=unused-import
  from keras.utils import get_custom_objects
  
  
  class AdaBelief(Optimizer):
      """AdaBelief optimizer.
keep keep keep keep replace keep keep keep keep keep
 Update code to support Tensorflow versions up to 2.8 (#1213)

* Update maximum tf version in setup + requirements

* - bump max version of tf version in launcher
- standardise tf version check

* update keras get_custom_objects  for tf>2.6

* bugfix: force black text in GUI file dialogs (linux)

* dssim loss - Move to stock tf.ssim function

* Update optimizer imports for compatibility

* fix logging for tf2.8

* Fix GUI graphing for TF2.8

* update tests

* bump requirements.txt versions

* Remove limit on nvidia-ml-py

* Graphing bugfixes
  - Prevent live graph from displaying if data not yet available

* bugfix: Live graph. Collect loss labels correctly

* fix: live graph - swallow inconsistent loss errors

* Bugfix: Prevent live graph from clearing during training

* Fix graphing for AMD 
lib/model/optimizers_plaid.py