code: def download_result(
      self, execution_id: str, result_cls=MockSerializableGraph
  ) -> MockSerializableGraph:
      index = int(execution_id)
      graph_json, additional_data = self.graphs[index]
      graph = MockSerializableGraph.from_serialized(
          graph_json, additional_data
      )
      return graph
  
imports: import json
  import uuid
  from datetime import timedelta
  from typing import Tuple, Union, Optional, Sequence
  import pytest
  from golem.utilities.serializable import Serializable
  from fedot.remote.infrastructure.clients.client import Client
  from fedot.remote.remote_evaluator import RemoteEvaluator, RemoteTaskParams
label_desc: Use image node_id 4 for calling the TestLocalClient obj's underlying member method code with example usage: obj.download_result(execution_id, result_cls) and returns: graph