code: def active_client() -> Argilla:
      """Returns the active argilla client.
  
      If Active client is None, initialize a default one.
      """
      return ArgillaSingleton.get()
  
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 a global function with example usage: active_client() and returns: ArgillaSingleton