code: def mypy_type_typing() -> None:
      class KernelSpec:
          item = Unicode("foo")
  
      class KernelSpecSubclass(KernelSpec):
          other = Unicode("bar")
  
      class GatewayTokenRenewerBase(ABC):
          item = Unicode("foo")
  
      class KernelSpecManager(HasTraits):
          """A manager for kernel specs."""
  
          kernel_spec_class = Type(
              KernelSpec,
              config=True,
              help="""The kernel spec class.  This is configurable to allow
              subclassing of the KernelSpecManager for customized behavior.
              """,
          )
          other_class = Type("foo.bar.baz")
  
          other_kernel_spec_class = Type(
              default_value=KernelSpecSubclass,
              klass=KernelSpec,
              config=True,
          )
  
          gateway_token_renewer_class = Type(
              klass=GatewayTokenRenewerBase,
              config=True,
              help="""The class to use for Gateway token renewal. (JUPYTER_GATEWAY_TOKEN_RENEWER_CLASS env var)""",
          )
  
      t = KernelSpecManager()
      reveal_type(
          t.kernel_spec_class
      )  # R: def () -> tests.test_typing.KernelSpec@129
      reveal_type(
          t.kernel_spec_class()
      )  # R: tests.test_typing.KernelSpec@129
      reveal_type(t.kernel_spec_class().item)  # R: builtins.str
      reveal_type(t.other_class)  # R: builtins.type
      reveal_type(t.other_class())  # R: Any
      reveal_type(
          t.other_kernel_spec_class
      )  # R: def () -> tests.test_typing.KernelSpec@129
      reveal_type(
          t.other_kernel_spec_class()
      )  # R: tests.test_typing.KernelSpec@129
      reveal_type(
          t.gateway_token_renewer_class  # R: def () -> tests.test_typing.GatewayTokenRenewerBase@135
      )
      reveal_type(t.gateway_token_renewer_class())
  
imports: from __future__ import annotations
  import logging
  import typing
  from abc import ABC
  import pytest
  from traitlets import Any, Bool, CInt, Dict, Enum, HasTraits, Instance, Int, List, Set, TCPAddress, Type, Unicode, Union, default, observe, validate
  from traitlets.config import Config
label_desc: Use image node_id 6 for calling a global function with example usage: mypy_type_typing() without return types