code: def __call__(self, current_state, **kwargs):
      for cb in self.callbacks:
          _ = getattr(cb, current_state.value)(
              self.tez_trainer, **kwargs
          )
  
file_path: tez/tez/callbacks/callbacks.py
imports: from typing import List
label_desc: Use image node_id 2 for calling the CallbackRunner obj's underlying member method code with example usage: obj.__call__(current_state) without return types