old_contents: from timewreport.interval import TimeWarriorInterval
  
  
  def test_interval_should_be_hashable():
      a = TimeWarriorInterval("20180816T100209Z", "20180816T110209Z", [], None)
      b = TimeWarriorInterval("20180816T090319Z", "20180816T100700Z", [], None)
  
      set([a, b])
  
new_contents: from timewreport.interval import TimeWarriorInterval
  
  
  def test_interval_should_be_hashable():
      a = TimeWarriorInterval("20180816T100209Z", "20180816T110209Z", [], None)
      b = TimeWarriorInterval("20180816T090319Z", "20180816T100700Z", [], None)
  
      assert {a, b}
  
subject: Replace function call with set literal