code: def dummy_list_of_lists():
      """Return a list of lists"""
      return [1, [2, 3], 4, [5, 6, 7, 8]]
  
imports: import itertools
  import textwrap
  import pytest
  from orion.core.io.space_builder import SpaceBuilder
  from orion.core.utils.format_terminal import format_algorithm, format_commandline, format_config, format_dict, format_identification, format_info, format_list, format_metadata, format_refers, format_space, format_stats, format_title, get_trial_params
  from orion.core.worker.experiment import ExperimentStats
  from orion.core.worker.trial import Trial
label_desc: Use image node_id 3 for calling a global function with example usage: dummy_list_of_lists() and returns: list