code: public static <D extends DifferenceEngineConfigurer<D>>
          D withPlaceholderSupportUsingDelimitersChainedAfter(D configurer, String placeholderOpeningDelimiterRegex,
              String placeholderClosingDelimiterRegex, DifferenceEvaluator evaluator) {
          return configurer.withDifferenceEvaluator(DifferenceEvaluators.chain(
            evaluator, new PlaceholderDifferenceEvaluator(placeholderOpeningDelimiterRegex,
                placeholderClosingDelimiterRegex)));
      }
docs: Adds placeholder support to a {@link DifferenceEngineConfigurer} considering an additional {@link DifferenceEvaluator}.
  
  @param configurer the configurer to add support to
  @param placeholderOpeningDelimiterRegex regular expression for
  the opening delimiter of placeholder, defaults to {@link
  PlaceholderDifferenceEvaluator#PLACEHOLDER_DEFAULT_OPENING_DELIMITER_REGEX}
  if the parameter is null or blank
  @param placeholderClosingDelimiterRegex regular expression for
  the closing delimiter of placeholder, defaults to {@link
  PlaceholderDifferenceEvaluator#PLACEHOLDER_DEFAULT_CLOSING_DELIMITER_REGEX}
  if the parameter is null or blank
  @param evaluator the additional evaluator - placeholder support is
  {@link DifferenceEvaluators#chain chain}ed after the given
  evaluator