code: def initialize_hooks(self):
      if self.end_of_iteration_hook is None:
          self.end_of_iteration_hook = c_f.return_input
      if self.end_of_epoch_hook is None:
          self.end_of_epoch_hook = c_f.return_input
  
imports: import torch
  import tqdm
  from ..utils import common_functions
  from ..utils import loss_tracker
  from ..utils.key_checker import KeyChecker, KeyCheckerDict
label_desc: Use image node_id 31 for calling the BaseTrainer obj's underlying member method code with example usage: obj.initialize_hooks() without return types