public String toFormattedString() {
      StringBuilder sb = new StringBuilder();
      boolean first = true;
      for (Object o : fields) {
        if (first) {
          first = false;
          sb.append('\n');
        }
        sb.append("    ").append(o).append('\n');
      }
      return sb.toString();
    }
The PdxType created by the first serialization by the auto serializer.
geode-core/src/main/java/org/apache/geode/pdx/internal/AutoSerializableManager.java