code: def load_from_string(self, content, container, **options):
          
          return load_with_fn(self._load_from_string_fn, content, container,
                              allow_primitives=self.allow_primitives(),
                              **options)
docs: Load configuration data from given string 'content'.
  
          :param content: Configuration string
          :param container: callble to make a container object
          :param options: keyword options passed to '_load_from_string_fn'
  
          :return: container object holding the configuration data