code: def _get_single_file_name(items_list):
      if len(items_list) == 1 and items_list[0].startswith("./"):
          return items_list[0][2:]
      return None
  
file_path: studio/studio/storage/storage_util.py
imports: import os
  import requests
  import shutil
  import time
  import tarfile
  import tempfile
  from studio.artifacts import artifacts_tracker
  from studio.util import util
label_desc: Use image node_id 5 for calling a global function with example usage: _get_single_file_name(items_list) and returns: None, items_list