code: public String getLanguage()
      {
          return this.attrValues.get(Person.AttrName.LANGUAGE) != null
                          ? this.attrValues.get(Person.AttrName.LANGUAGE)
                          : Locale.ENGLISH.getISO3Language();
      }
docs: Method to get the Language of the UserInterface for this Person. Default
  is english.
  
  @return iso code of a language