code: function getLocaleFrom(req, locales) {
        if (!req || !req.session || !req.session[options.sessionLocaleName]) return false;
        console.error('i18n locals strategy. function getLocaleFrom not implemented');
        return false;
      }
docs: gets the locale from the given strategy
  
  @param {Object} req              connect / express request object
  @param {Array} locales           locale definition Array.
  @return {Object|String|false}    Object: if it was previously stored, String: if the locale was found with the given Strategy, Boolean:false otherwise.