code: def test_upgrade_filter_sets():
      """
      ensure that filter set upgrade operation produces a object that is compatible
      with a currently functioning set
      """
      converted_filter_set = deepcopy(filter_sets_v1)
      upgrade_filter_set(converted_filter_set)
      assert converted_filter_set == filter_sets_v2
  
imports: from copy import deepcopy
  from importlib import import_module
label_desc: Use image node_id 2 for calling a global function with example usage: test_upgrade_filter_sets() without return types