code: def test_eval_strategy_str():
      model_metadata = _model_metadata_example(mocked_path())
  
      strategies_json = model_metadata["strategies"]
  
      strategy = import_strategy_from_str(strategies_json)
      assert strategy is SkLearnClassificationStrategy
  
file_path: FEDOT/test/integration/models/test_repository.py
imports: import json
  import os
  from fedot.core.operations.evaluation.classification import SkLearnClassificationStrategy
  from fedot.core.repository.json_evaluation import import_enums_from_str, import_strategy_from_str, read_field
  from fedot.core.repository.operation_types_repository import OperationTypesRepository, get_operation_type_from_id
  from fedot.core.repository.pipeline_operation_repository import PipelineOperationRepository
  from fedot.core.repository.tasks import Task, TaskTypesEnum
label_desc: Use image node_id 6 for calling a global function with example usage: test_eval_strategy_str() without return types