code: def lr(self, lr):
      self._optimizer._set_hyper("learning_rate", lr)
  
imports: import abc
  import warnings
  import tensorflow
  from tensorflow_addons.optimizers import KerasLegacyOptimizer
  from tensorflow_addons.utils import types
  from typeguard import typechecked
label_desc: Use image node_id 16 for calling the AveragedOptimizerWrapper obj's underlying member method code with example usage: obj.lr(lr) without return types