code: def test_names_with_postfix():
      name_with_postfix = "rf/best_model_ever"
      name_without_postfix = get_operation_type_from_id(
          name_with_postfix
      )
      assert name_without_postfix == "rf"
  
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 9 for calling a global function with example usage: test_names_with_postfix() without return types