code: def clear_all_collection():
      """Clears existing all (name, config) pairs."""
      with _lock:
          _knowledge_bank_collections.clear()
  
imports: import threading
  from typing import Text
  from research.carls import dynamic_embedding_config_pb2
label_desc: Use image node_id 3 for calling a global function with example usage: clear_all_collection() without return types