code: def _load_plain_yaml(cls, _yaml: YamlDocument) -> Any:
          
          if Validator.is_stream(yaml_=_yaml):
              return yaml.safe_load(_yaml)
          if Validator.is_file(yaml_=_yaml):
              with open(_yaml) as fhandle:  # type: ignore
                  return yaml.safe_load(fhandle)
          if Validator.instance_of(target_type=str, yaml_=_yaml):
              return yaml.safe_load(_yaml)
  
          raise TypeError("Argument '_yaml' is whether a stream, nor a file, nor a string")
docs: Will just load the yaml without executing any extensions. You will get the plain dictionary
          without augmentation. It is equivalent to just perform `yaml.safe_load`. Besides that you
          can specify a stream, a file or just a string that contains yaml/json data.
  
          Examples:
              >>> jstr = '{"a":1, "b": {"c": 3, "d": "d"}}'
              >>> d = DictMentor._load_plain_yaml(jstr)
              >>> d['a'], d['b']['c'], d['b']['d']
              (1, 3, 'd')
  
          Args:
              yaml_: Whether a stream (e.g. file pointer), a file name of an existing file or string
                  containing yaml/json data.
  
          Returns:
              Returns the yaml_ data as a python dictionary.