code: def on_train_begin(self, **kwargs:Any)->None:
          "Initialize inner arguments."
          self.wait, self.opt = 0, self.learn.opt
          super().on_train_begin(**kwargsf on_train_begin(self, **kwargs:Any)->None:
          "Initialize inner arguments."
          self.wait, self.opt = 0, self.learn.opt
          super().on_train_begin(**kwargs)
docs: Initialize inner arguments.