# File lib/gettext/textdomain_manager.rb, line 159
    def translate_plural_message(klass, arg1, arg2, arg3 = "|", arg4 = "|")
      lang = Locale.candidates(:supported_language_tags => @supported_language_tags, 
                               :type => :posix)[0]
      translate_plural_message_to(lang, klass, arg1, arg2, arg3, arg4)
    end