code: def expect_data_node(*inputs: DataNode) -> None:
      for input in inputs:
          assert isinstance(
              input, DataNode
          ), f"Expected DataNode, got {input} of type {type(input)}"
  
imports: from pathlib import Path
  import numpy
  from typing import cast, Sequence, Union
  from nvidia.dali import fn, ops
  from nvidia.dali import types, tensors
  from nvidia.dali.data_node import DataNode
  from nvidia.dali.pipeline import pipeline_def, Pipeline
  from test_utils import get_dali_extra_path, check_numba_compatibility_cpu
  from nose.plugins.attrib import attr
label_desc: Use image node_id 1 for calling a global function with example usage: expect_data_node() without return types