code: def _test_combinations():
      return combinations.combine(tf_api_version=[1], mode=["graph"])
  
imports: import time
  from absl.testing import parameterized
  from tensorflow.python.client import session
  from tensorflow.python.data.experimental.ops import map_defun
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import check_ops
  from tensorflow.python.ops import data_flow_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import sparse_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling a global function with example usage: _test_combinations() and returns: combinations