code: def test_standard_functions_setter():
      new_standard = standard.MultiObjectiveFunction([])
  
      try:
          new_standard.functions = None
      except:
          new_standard.functions = [1, 2]
  
      assert len(new_standard.functions) == 2
  
label_desc: Use image node_id 2 for calling a global function with example usage: test_standard_functions_setter() without return types