code: def get_requires_for_build_sdist(self, config_settings=None):
      config_settings = self._fix_config(config_settings)
      return self._get_build_requires(config_settings, requirements=[])
  
imports: import io
  import os
  import sys
  import tokenize
  import shutil
  import contextlib
  import setuptools
  import distutils
  from setuptools.py31compat import TemporaryDirectory
  from pkg_resources import parse_requirements
  from pkg_resources.py31compat import makedirs
label_desc: Use image node_id 5 for calling the _BuildMetaBackend obj's underlying member method code with example usage: obj.get_requires_for_build_sdist(config_settings) and returns: self