code: def __call__(self, batch):
      sample_list = convert_batch_to_sample_list(batch)
      sample_list.dataset_name = self._dataset_name
      sample_list.dataset_type = self._dataset_type
      return sample_list
  
imports: from mmf.common.sample import convert_batch_to_sample_list
label_desc: Use image node_id 2 for calling the BatchCollator obj's underlying member method code with example usage: obj.__call__(batch) and returns: sample_list