code: def clear_marks():
      files = _GLOBAL_MARK_PATH.glob("**/workflow-*")
      for file in files:
          file.unlink()
  
file_path: ray/python/ray/workflow/tests/utils.py
imports: import pathlib
  import tempfile
label_desc: Use image node_id 5 for calling a global function with example usage: clear_marks() without return types