code: def hierarchical_dict_params():
      """Return dictionary of params to build a hierarchical trial"""
      return {
          "yolo": {"first": ("asdfa", 2), "second": 0},
          "yoloflat": 3.5,
      }
  
file_path: orion/tests/unittests/core/test_utils_format.py
imports: import pytest
  from orion.core.utils.format_trials import dict_to_trial, trial_to_tuple, tuple_to_trial
  from orion.core.worker.trial import Trial
label_desc: Use image node_id 4 for calling a global function with example usage: hierarchical_dict_params() and returns: dict