code: public void setZipcode(String zipcode) {
  
          checkZipCode(zipcode);
          if (zipcode != null) {
              zipcode = zipcode.toUpperCase();
          }
          setAdditionalInfo(CmsUserSettings.ADDITIONAL_INFO_ZIPCODE, zipcode);
      }
docs: Sets the zip code information of this user.<p>
  
  @param zipcode the zip code information to set