code: def import_gssapi_extension(name):
      
  
      try:
          path = 'gssapi.raw.ext_{0}'.format(name)
          __import__(path)
          return sys.modules[path]
      except ImportError:
          return None
docs: Import a GSSAPI extension module
  
      This method imports a GSSAPI extension module based
      on the name of the extension (not including the
      'ext_' prefix).  If the extension is not available,
      the method retuns None.
  
      Args:
          name (str): the name of the extension
  
      Returns:
          module: Either the extension module or None