code: def testImportedFunctionsRegistered(self):
      if test_util.is_gpu_available():
          self.skipTest("not a GPU test")
      with ops.Graph().as_default() as graph:
          x = array_ops.placeholder(
              dtypes.variant, shape=[], name="foo"
          )
          ds = dataset_ops.from_variant(
              x, structure=(tensor_spec.TensorSpec([], dtypes.int32))
          )
          y = ds.reduce(
              array_ops.zeros([], dtype=dtypes.int32),
              lambda p, q: p + q,
          )
  
      graph_def = graph.as_graph_def()
  
      def fn_to_wrap(a):
          returned_elements = graph_def_importer.import_graph_def(
              graph_def, input_map={x.name: a}, return_elements=[y.name]
          )
          return returned_elements[0]
  
      wrapped_fn = wrap_function.wrap_function(
          fn_to_wrap, [tensor_spec.TensorSpec((), dtypes.variant)]
      )
      ds = dataset_ops.Dataset.from_tensor_slices([10, 20])
      v = dataset_ops.to_variant(ds)
      self.evaluate(wrapped_fn(v))
  
imports: import os
  from tensorflow.core.protobuf import meta_graph_pb2
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.eager import backprop
  from tensorflow.python.eager import def_function
  from tensorflow.python.eager import wrap_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import importer
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import init_ops
  from tensorflow.python.ops import state_ops
  from tensorflow.python.ops import variable_scope
  from tensorflow.python.ops import variable_v1
  from tensorflow.python.ops import variables
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.ops.ragged import ragged_tensor
  from tensorflow.python.platform import test
  from tensorflow.python.training import saver
label_desc: Use image node_id 5 for calling the WrappedGraphTest obj's underlying member method code with example usage: obj.testImportedFunctionsRegistered() and returns: returned_elements