code: def xfail(op_name, variant_name="", *, device_type=None, dtypes=None):
      return decorate(
          op_name=op_name,
          variant_name=variant_name,
          decorator=unittest.expectedFailure,
          device_type=device_type,
          dtypes=dtypes,
      )
  
imports: import itertools
  import torch
  from functorch import vmap
  import torch.utils._pytree
  from functorch_additional_op_db import additional_op_db
  from torch.testing._internal.common_methods_invocations import DecorateInfo
  from torch.testing._internal.common_methods_invocations import op_db
  from torch.testing._internal.common_modules import module_db
  import os
  import unittest
  from torch.testing._internal.common_device_type import toleranceOverride
  from torch.testing._internal.autograd_function_db import autograd_function_db
  from collections import namedtuple
label_desc: Use image node_id 17 for calling a global function with example usage: xfail(op_name, variant_name) and returns: decorate