docs: public void transform(DataPipe cr) {
          for (Map.Entry<String, String> entry : cr.getDataMap().entrySet()) {
              String value = entry.getValue();
  
              if (value.equals("#{customplaceholder}")) {
                  // Generate a random number
                  int ran = rand.nextInt();
                  entry.setValue(String.valueOf(ran));
              }
          }
      }