code: def _ignore_ref(ref: str) -> bool:
      return (
          any(
              ref.startswith(namespace)
              for namespace in ITER_SKIP_NAMESPACES
          )
          or ref in STASHES
      )
  
imports: import os
  import random
  import sys
  from collections import defaultdict
  from functools import wraps
  from typing import TYPE_CHECKING, Callable, Dict, Generator, Iterable, List, Mapping, Optional, Set, Tuple, Union
  from dvc.exceptions import InvalidArgumentError
  from dvc.repo.experiments.exceptions import AmbiguousExpRefInfo
  from dvc.rwlock import rwlock
  from dvc.scm import Git
  from .refs import EXEC_APPLY, EXEC_BASELINE, EXEC_BRANCH, EXPS_NAMESPACE, ITER_SKIP_NAMESPACES, STASHES, ExpRefInfo
label_desc: Use image node_id 3 for calling a global function with example usage: _ignore_ref(ref) and returns: unknown