code: def __iter__(self) -> Iterator[str]:
      return iter(self.parts)
  
imports: import time
  from dataclasses import dataclass
  from enum import Enum
  from typing import Any, Iterable, Iterator, Optional, Tuple, Union
label_desc: Use image node_id 4 for calling the MetricName obj's underlying member method code with example usage: obj.__iter__() and returns: iter