interlingual param in hypernyms method doesn't have influence on result

[bhnatkowska]

Test:
stol = wn.synsets[3278]
hypernymsEN = wn.hypernyms(stol, True)
hypernymsPL = wn.hypernyms(stol, False)
hypernymsEN == hypernymsPL ==> True

hyernymsEN is equal to hypernymsPL even if the interlingual param is set differently.
I guess that in the first case (for hypernymsEN) also lexical units in English should be included.

Similar test called for hyponyms gives different results (with True lexical units in English are presented).