@Override
  public void sendTo(DataOutput out) throws IOException {
    out.writeByte(DSCODE.PDX_INLINE_ENUM.toByte());
    DataSerializer.writeString(className, out);
    DataSerializer.writeString(enumName, out);
    InternalDataSerializer.writeArrayLength(enumOrdinal, out);
  }
Used to represent an enum value as a PdxInstance

@since GemFire 6.6.2
geode-core/src/main/java/org/apache/geode/pdx/internal/PdxInstanceEnum.java