code: def test_function_unsupported_devices(
      *,
      func,
      expected,
      backend_fw,
  ):
      with BackendHandler.update_backend(backend_fw) as ivy_backend:
          res = ivy_backend.function_unsupported_devices(func)
          exp = set(expected)
  
          assert sorted(exp) == sorted(res)
  
imports: import io
  import multiprocessing
  import os
  import re
  import shutil
  import sys
  import warnings
  import numpy
  import psutil
  import subprocess
  from hypothesis import strategies, assume
  import ivy
  import ivy_tests.test_ivy.helpers
  import ivy_tests.test_ivy.helpers.globals
  from ivy_tests.test_ivy.helpers import handle_test, BackendHandler
label_desc: Use image node_id 16 for calling a global function with example usage: test_function_unsupported_devices() without return types