code: def __next__(self):
      if self.count >= 2:
          raise StopIteration
      self.count = self.count + 1
      try:
          return next(self.iter)
      except StopIteration:
          self.iter = iter(self.dataloader)
          return next(self.iter)
  
file_path: pytorch-lightning/tests/tests_fabric/helpers/dataloaders.py
label_desc: Use image node_id 2 for calling the CustomNotImplementedErrorDataloader obj's underlying member method code with example usage: obj.__next__() and returns: next, next