code: def open(self, state_data_view_store):
      for udf in self._udfs:
          udf.open(state_data_view_store.get_runtime_context())
      self._udf_data_views = []
      for data_view_specs in self._udf_data_view_specs:
          data_views = {}
          for data_view_spec in data_view_specs:
              if isinstance(data_view_spec, ListViewSpec):
                  data_views[
                      data_view_spec.field_index
                  ] = state_data_view_store.get_state_list_view(
                      data_view_spec.state_id,
                      data_view_spec.element_coder,
                  )
              elif isinstance(data_view_spec, MapViewSpec):
                  data_views[
                      data_view_spec.field_index
                  ] = state_data_view_store.get_state_map_view(
                      data_view_spec.state_id,
                      data_view_spec.key_coder,
                      data_view_spec.value_coder,
                  )
          self._udf_data_views.append(data_views)
      for key in self._distinct_view_descriptors.keys():
          self._distinct_data_views[
              key
          ] = state_data_view_store.get_state_map_view(
              "agg%ddistinct" % key, PickleCoder(), PickleCoder()
          )
  
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 2 for calling the SimpleNamespaceAggsHandleFunction obj's underlying member method code with example usage: obj.open(state_data_view_store) without return types