code: def _return_empty(request: HTTPServerRequest) -> dict[str, Any]:
      return {}
  
file_path: bokeh/src/bokeh/application/handlers/request_handler.py
imports: from __future__ import annotations
  import logging
  from typing import TYPE_CHECKING, Any, Callable
  from .handler import Handler
label_desc: Use image node_id 1 for calling a global function with example usage: _return_empty(request) and returns: dict