code: def _preprocess(self, body, headers, include_dirs, lang):
      src = self._gen_temp_sourcefile(body, headers, lang)
      out = "_configtest.i"
      self.temp_files.extend([src, out])
      self.compiler.preprocess(src, out, include_dirs=include_dirs)
      return (src, out)
  
imports: import os
  import re
  from ..core import Command
  from ..errors import DistutilsExecError
  from ..sysconfig import customize_compiler
  from distutils._log import log
label_desc: Use image node_id 6 for calling the config obj's underlying member method code with example usage: obj._preprocess(body, headers, include_dirs, lang) and returns: src,  out