code: def _convert_to_operation(self, operation_type: str):
      return object()
  
file_path: FEDOT/fedot/core/operations/evaluation/data_source.py
imports: import warnings
  from typing import Optional
  from fedot.core.data.data import InputData, OutputData
  from fedot.core.operations.evaluation.evaluation_interfaces import EvaluationStrategy
  from fedot.core.operations.operation_parameters import OperationParameters
label_desc: Use image node_id 4 for calling the DataSourceStrategy obj's underlying member method code with example usage: obj._convert_to_operation(operation_type) and returns: object