code: def test_empty_data(self):
      dataloader = []
      evaluator = SupervisedEvaluator(
          val_data_loader=dataloader,
          device=torch.device("cpu"),
          epoch_length=0,
          network=TestNet(),
          non_blocking=False,
          prepare_batch=PrepareBatchDefault(),
          decollate=False,
      )
      evaluator.run()
  
file_path: MONAI/tests/test_prepare_batch_default.py
imports: from __future__ import annotations
  import unittest
  import torch
  from monai.engines import PrepareBatchDefault, SupervisedEvaluator
  from tests.utils import assert_allclose
label_desc: Use image node_id 4 for calling the TestPrepareBatchDefault obj's underlying member method code with example usage: obj.test_empty_data() without return types