code: @Override
      public Enumeration<Locale> getLocales() {
          if (null == this.locales) {
              this.locales = connection.getEncodingUtils().getLocales(this.request.getHeader("Accept-Language"));
          }
          return Collections.enumeration(this.locales);
      }
docs: /*
  @see javax.servlet.ServletRequest#getLocales()