code: def get_batch(self, batch_id):
          
  
          payload = self._get_data_by_id(batch_id, 'commit_store_get_batch')
  
          batch = Batch()
          batch.ParseFromString(payload)
  
          return batch
docs: Check to see if the requested batch_id is in the current chain. If so,
          find the batch with the batch_id and return it. This is done by
          finding the block and searching for the batch.
  
          :param batch_id (string): The id of the batch requested.
          :return:
          The batch with the batch_id.