code: def __init__(
      self,
      allowed_lateness: int,
      key_selector: RowKeySelector,
      state_backend,
      state_value_coder,
      window_assigner: WindowAssigner[W],
      window_aggregator: NamespaceAggsHandleFunctionBase[W],
      trigger: Trigger[W],
      rowtime_index: int,
      shift_timezone: str,
  ):
      self._allowed_lateness = allowed_lateness
      self._key_selector = key_selector
      self._state_backend = state_backend
      self._state_value_coder = state_value_coder
      self._window_assigner = window_assigner
      self._window_aggregator = window_aggregator
      self._rowtime_index = rowtime_index
      self._shift_timezone = shift_timezone
      self._window_function = (
          None
      )  # type: InternalWindowProcessFunction[K, W]
      self._internal_timer_service = (
          None
      )  # type: LegacyInternalTimerServiceImpl
      self._window_context = None  # type: WindowContext
      self._trigger = trigger
      self._trigger_context = None  # type: TriggerContext
      self._window_state = self._state_backend.get_value_state(
          "window_state", state_value_coder
      )
  
imports: import datetime
  from abc import ABC, abstractmethod
  from typing import TypeVar, Generic, List, Dict
  import pytz
  from pyflink.common import Row, RowKind
  from pyflink.common.constants import MAX_LONG_VALUE
  from pyflink.fn_execution.datastream.timerservice import InternalTimer
  from pyflink.fn_execution.datastream.process.timerservice_impl import LegacyInternalTimerServiceImpl
  from pyflink.fn_execution.coders import PickleCoder
  from pyflink.fn_execution.table.aggregate_slow import DistinctViewDescriptor, RowKeySelector
  from pyflink.fn_execution.table.state_data_view import DataViewSpec, ListViewSpec, MapViewSpec, PerWindowStateDataViewStore
  from pyflink.fn_execution.table.window_assigner import WindowAssigner, PanedWindowAssigner, MergingWindowAssigner
  from pyflink.fn_execution.table.window_context import WindowContext, TriggerContext, K, W
  from pyflink.fn_execution.table.window_process_function import GeneralWindowProcessFunction, InternalWindowProcessFunction, PanedWindowProcessFunction, MergingWindowProcessFunction
  from pyflink.fn_execution.table.window_trigger import Trigger
  from pyflink.table.udf import ImperativeAggregateFunction, FunctionContext
label_desc: Use image node_id 1 to create a new GroupWindowAggFunctionBase object from inherited base classes: Generic with example: obj = GroupWindowAggFunctionBase(allowed_lateness, key_selector, state_backend, state_value_coder, window_assigner, window_aggregator, trigger, rowtime_index, shift_timezone)