code: def data():
      """Return serializable data."""
      return "this is datum"
  
imports: import copy
  import json
  from importlib import reload
  import pytest
  import orion.client
  import orion.client.cli
  import orion.core
  from orion.algo.random import Random
  from orion.client import get_experiment
  from orion.client.experiment import ExperimentClient
  from orion.core.io.database.ephemeraldb import EphemeralDB
  from orion.core.io.database.pickleddb import PickledDB
  from orion.core.utils.exceptions import BranchingEvent, NoConfigurationError, RaceCondition, UnsupportedOperation
  from orion.storage.base import setup_storage
  from orion.storage.legacy import Legacy
  from orion.testing import OrionState
label_desc: Use image node_id 2 for calling a global function with example usage: data() and returns: str