code: def get_export_symbols(self, ext):
      if isinstance(ext, Library):
          return ext.export_symbols
      return _build_ext.get_export_symbols(self, ext)
  
imports: import os
  import sys
  import itertools
  from distutils.command.build_ext import build_ext
  from distutils.file_util import copy_file
  from distutils.ccompiler import new_compiler
  from distutils.sysconfig import customize_compiler, get_config_var
  from distutils.errors import DistutilsError
  from distutils import log
  from setuptools.extension import Library
  from setuptools.extern import six
  from distutils.sysconfig import _config_vars
label_desc: Use image node_id 7 for calling the build_ext obj's underlying member method code with example usage: obj.get_export_symbols(ext) and returns: _build_ext, ext