docstr: Initialization method for the function. It is called before the actual working methods.
  
  :param state_data_view_store: The object used to manage the DataView.
docstr_tok: ["Initialization","method","for","the","function",".","It","is","called","before","the","actual","working","methods",".",":","param","state_data_view_store",":","The","object","used","to","manage","the","DataView","."]
code: def open(self, state_data_view_store):
      """
      Initialization method for the function. It is called before the actual working methods.
  
      :param state_data_view_store: The object used to manage the DataView.
      """
      pass
  
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 for calling the NamespaceAggsHandleFunctionBase obj's underlying member method code with example usage: obj.open(state_data_view_store) without return types