code: def check_missing_outputs(stage):
      paths = [str(out) for out in stage.outs if not out.exists]
      if paths:
          raise MissingDataSource(paths)
  
imports: import os
  import pathlib
  from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple, Union
  from funcy import concat, first, lsplit, rpartial
  from dvc.annotations import ANNOTATION_FIELDS
  from dvc.exceptions import InvalidArgumentError
  from dvc_data.hashfile.meta import Meta
  from .exceptions import MissingDataSource, StageExternalOutputsError, StagePathNotDirectoryError, StagePathNotFoundError, StagePathOutsideError
label_desc: Use image node_id 7 for calling a global function with example usage: check_missing_outputs(stage) without return types