code: def extract_over_window_user_defined_function(
      user_defined_function_proto,
  ):
      window_index = user_defined_function_proto.window_index
      return (
          *extract_user_defined_function(
              user_defined_function_proto, True
          ),
          window_index,
      )
  
imports: import datetime
  import threading
  import time
  from collections.abc import Generator
  from functools import partial
  from typing import Any, Tuple, Dict, List
  from pyflink.common import Row
  from pyflink.fn_execution import pickle
  from pyflink.serializers import PickleSerializer
  from pyflink.table import functions
  from pyflink.table.udf import DelegationTableFunction, DelegatingScalarFunction, ImperativeAggregateFunction, PandasAggregateFunctionWrapper
label_desc: Use image node_id 5 for calling a global function with example usage: extract_over_window_user_defined_function(user_defined_function_proto) and returns: unknown,  window_index