Reverting commit 8745a94d0d6885db01aad1eb31df73b262612cf1  (fix warnings in LanguageTest, changing 'insteadof' for 'is')
Reverting commit 8745a94d0d6885db01aad1eb31df73b262612cf1  (fix warnings in LanguageTest, changing 'insteadof' for 'is')

greg-dove/flex-asjs,greg-dove/flex-asjs,greg-dove/flex-asjs,greg-dove/flex-asjs