class_docstr: Window node.
code: def _window_index(self, data):  # pylint: disable=unused-argument
      raise NotImplementedError
  
file_path: towhee/towhee/runtime/nodes/_window_base.py
imports: from typing import List, Dict
  from towhee.runtime.data_queue import Empty
  from towhee.runtime.time_profiler import Event
  from .node import Node
  from ._single_input import SingleInputMixin
label_desc: Use image node_id 5 for calling the WindowBase obj's underlying member method code with example usage: obj._window_index(data) without return types