docs: private boolean doesPublicanCfgsContainValue(final ContentSpec contentSpec, final String value) {
          final Pattern pattern = Pattern.compile("^(.*\\n)?( |\\t)*" + value + ":.*", java.util.regex.Pattern.DOTALL);
          if (!isNullOrEmpty(contentSpec.getPublicanCfg()) && pattern.matcher(contentSpec.getPublicanCfg()).matches()) {
              return true;
          } else if (!contentSpec.getAllAdditionalPublicanCfgs().isEmpty()) {
              for (final Entry<String, String> entry : contentSpec.getAllAdditionalPublicanCfgs().entrySet()) {
                  if (!isNullOrEmpty(entry.getValue()) && pattern.matcher(entry.getValue()).matches()) {
                      return true;
                  }
              }
          }
  
          return false;
      }