class_docstr: Helper functions for testing.
  
  Primarily provided for tests that use fixture (and derived)
  `three_experiments_branch_same_name_trials_benchmarks`
class_docstr_tok: ["Helper","functions","for","testing",".","Primarily","provided","for","tests","that","use","fixture","(","and","derived",")","`","three_experiments_branch_same_name_trials_benchmarks","`"]
docstr: Check all versions of original experiment test_single_exp.2 in given database
code: def check_unique_import_test_single_expV2(loaded_db, nb_versions=1):
      """Check all versions of original experiment test_single_exp.2 in given database"""
      _Helpers.check_unique_import(
          loaded_db,
          "test_single_exp",
          2,
          nb_trials=6,
          nb_versions=nb_versions,
      )
  
imports: import copy
  import os
  import pickle
  import zlib
  from collections import Counter
  from tempfile import NamedTemporaryFile
  import pytest
  import yaml
  import orion.core.cli
  import orion.core.io.experiment_builder
  import orion.core.utils.backward
  from orion.core.worker.trial import Trial
  from orion.storage.backup import _get_exp_key, dump_database, get_experiment_parent_links, get_experiment_root_links, get_trial_parent_links
label_desc: Use image node_id 8 for calling the _Helpers obj's underlying member method code with example usage: obj.check_unique_import_test_single_expV2(loaded_db, nb_versions) without return types