# File lib/gettext/textdomain_manager.rb, line 112
    def translate_singluar_message(klass, msgid, div = '|')
      lang = Locale.candidates(:supported_language_tags => @supported_language_tags, 
                               :type => :posix)[0]
      translate_singluar_message_to(lang, klass, msgid, div)
    end