code: def build_extensions(self):
      build_ext_options.build_options(self)
      build_ext.build_extensions(self)
  
imports: import os
  import subprocess
  import sys
  import contextlib
  from distutils.command.build_ext import build_ext
  from distutils.sysconfig import get_python_inc
  import distutils.util
  from distutils import ccompiler, msvccompiler
  from setuptools import Extension, setup, find_packages
label_desc: Use image node_id 1 for calling the build_ext_subclass obj's underlying member method code with example usage: obj.build_extensions() without return types