code: public boolean hasResource(String name, Locale locale) {
          name = UrlUtils.cleanName(name);
          locale = cleanLocale(locale);
          return stringLoader.exists(name, locale) || loader.exists(name, locale);
      }
docs: Tests whether the resource denoted by this abstract pathname exists.
  
  @param name   - template name
  @param locale - resource locale
  @return exists
  @see #getEngine()