code: def test_assert_is_func_type_succeeds(self):
      def func() -> str:
          return "foo"
  
      utils.assert_is_functype(func)
  
imports: import copy
  import inspect
  from typing import Dict, List
  import tensorflow
  from tfx.dsl.component.experimental import annotations
  from tfx.dsl.component.experimental import decorators
  from tfx.dsl.component.experimental import function_parser
  from tfx.dsl.component.experimental import utils
  from tfx.dsl.components.base import executor_spec
  from tfx.types import standard_artifacts
  from tfx.types import system_executions
label_desc: Use image node_id 1 for calling the UtilsTest obj's underlying member method code with example usage: obj.test_assert_is_func_type_succeeds() and returns: str