code: def priority_traversal() -> Iterator["Relevance"]:
      yield Relevance.HIGH
      yield Relevance.NONE
      yield Relevance.PROBABLE
      yield Relevance.UNLIKELY
      yield Relevance.UNRANKED
  
imports: import operator
  import sys
  from abc import abstractmethod
  from copy import copy
  from enum import Enum
  from functools import total_ordering
  from itertools import chain
  from typing import Any, Callable, Dict, FrozenSet, Iterable, Iterator, List, Optional, Tuple
  from tools.testing.test_run import TestRun, TestRuns
label_desc: Use image node_id 3 for calling the Relevance obj's underlying member method code with example usage: obj.priority_traversal() without return types