code: def example_4d(dummy: ep.Tensor) -> Tuple[ep.Tensor, ep.Tensor]:
      reference = ep.full(dummy, (10, 3, 32, 32), 0.2)
      perturbed = reference + 0.6
      return reference, perturbed
  
file_path: foolbox/tests/test_distances.py
imports: from typing import Tuple, Any, Dict, Callable, TypeVar
  import numpy
  import pytest
  import foolbox
  import eagerpy
label_desc: Use image node_id 2 for calling a global function with example usage: example_4d(dummy) and returns: reference,  perturbed