class_docstr: The active argilla singleton instance
code: def clear(cls) -> None:
      cls._INSTANCE = None
  
file_path: argilla/src/argilla/client/singleton.py
imports: from typing import Any, Dict, Optional
  from argilla.client.client import Argilla
label_desc: Use image node_id 2 for calling the ArgillaSingleton obj's underlying member method code with example usage: obj.clear(cls) without return types