code: def clip_gradients(self):
      if self.gradient_clippers is not None:
          for v in self.gradient_clippers.values():
              v()
  
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 21 for calling the BaseTrainer obj's underlying member method code with example usage: obj.clip_gradients() without return types