code: def exp(storage, config):
      """Return an Experiment."""
      return experiment_builder.build(**config, storage=storage)
  
file_path: orion/tests/unittests/core/worker/test_trial_pacemaker.py
imports: import datetime
  import time
  import pytest
  import orion.core.io.experiment_builder
  from orion.core.utils.format_trials import tuple_to_trial
  from orion.core.worker.trial_pacemaker import TrialPacemaker
  from orion.storage.base import setup_storage
label_desc: Use image node_id 2 for calling a global function with example usage: exp(storage, config) and returns: experiment_builder