docstr: Gets the result of the aggregation from the current accumulators and namespace properties
  (like window start).
  :param namespace: the namespace properties which should be calculated, such window start
  :return: the final result (saved in a List) of the current accumulators.
docstr_tok: ["Gets","the","result","of","the","aggregation","from","the","current","accumulators","and","namespace","properties","(","like","window","start",")",".",":","param","namespace",":","the","namespace","properties","which","should","be","calculated",",","such","window","start",":","return",":","the","final","result","(","saved","in","a","List",")","of","the","current","accumulators","."]
code: def get_value(self, namespace: N) -> List:
      """
      Gets the result of the aggregation from the current accumulators and namespace properties
      (like window start).
      :param namespace: the namespace properties which should be calculated, such window start
      :return: the final result (saved in a List) of the current accumulators.
      """
      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 NamespaceAggsHandleFunction obj's underlying member method code with example usage: obj.get_value(namespace) without return types