class_docstr: Class for forecasting time series with mean 
code: def part_for_averaging(self):
      return self.params.get("part_for_averaging")
  
imports: from copy import copy
  import numpy
  from fedot.core.data.data import InputData, OutputData
  from fedot.core.operations.evaluation.operation_implementations.data_operations.ts_transformations import ts_to_table, transform_features_and_target_into_lagged
  from fedot.core.operations.evaluation.operation_implementations.implementation_interfaces import ModelImplementation
  from fedot.core.operations.operation_parameters import OperationParameters
  from fedot.core.repository.dataset_types import DataTypesEnum
label_desc: Use image node_id 2 for calling the NaiveAverageForecastImplementation obj's underlying member method code with example usage: obj.part_for_averaging() and returns: self