code: def aesthetics(cls):
          
          aesthetics = cls.REQUIRED_AES.copy()
          calculated = get_calculated_aes(cls.DEFAULT_AES)
          for ae in set(cls.DEFAULT_AES) - set(calculated):
              aesthetics.add(ae)
          return aesthetics
docs: Return a set of all non-computed aesthetics for this stat.
  
          stats should not override this method.