code: def _make_progress_key(key):
      return key + "-progress"
  
file_path: dash/dash/long_callback/managers/__init__.py
imports: from abc import ABC
  import inspect
  import hashlib
label_desc: Use image node_id 13 for calling the BaseLongCallbackManager obj's underlying member method code with example usage: obj._make_progress_key(key) and returns: unknown