code: def train_state(self, value):
      self._train_state = value
      if self._callback_runner is not None:
          self._callback_runner(value)
  
imports: import warnings
  import psutil
  import torch
  import torch.nn
  from tqdm import tqdm
  from tez import enums
  from tez.callbacks import CallbackRunner
  from tez.utils import AverageMeter
label_desc: Use image node_id 5 for calling the Model obj's underlying member method code with example usage: obj.train_state(value) without return types