code: def write_stub(self, output_dir, ext, compile=False):
      stub_file = (
          os.path.join(output_dir, *ext._full_name.split(".")) + ".py"
      )
      self._write_stub_file(stub_file, ext, compile)
  
imports: import os
  import sys
  import itertools
  from importlib.machinery import EXTENSION_SUFFIXES
  from importlib.util import cache_from_source
  from typing import Dict, Iterator, List, Tuple
  from pathlib import Path
  from distutils.command.build_ext import build_ext
  from distutils.ccompiler import new_compiler
  from distutils.sysconfig import customize_compiler, get_config_var
  from distutils import log
  from setuptools.errors import BaseError
  from setuptools.extension import Extension, Library
  from distutils.sysconfig import _config_vars
label_desc: Use image node_id 19 for calling the build_ext obj's underlying member method code with example usage: obj.write_stub(output_dir, ext, compile) without return types