code: def dummy(request: Any) -> ep.Tensor:
      backend: Optional[str] = request.config.option.backend
      if backend is None or backend == "none":
          pytest.skip()
          assert False
      return ep.utils.get_dummy(backend)
  
imports: from typing import Optional, Callable, Tuple, Dict, Any, List, NamedTuple
  import functools
  import pytest
  import eagerpy
  import foolbox
  import foolbox
label_desc: Use image node_id 2 for calling a global function with example usage: dummy(request) and returns: ep