@Override
  public void deserialize(ByteBuffer byteBuffer) {
    super.deserialize(byteBuffer);

    if (ReadWriteIOUtils.readBool(byteBuffer)) {
      updatedTopicMeta = TopicMeta.deserialize(byteBuffer);
    }

    if (ReadWriteIOUtils.readBool(byteBuffer)) {
      existedTopicMeta = TopicMeta.deserialize(byteBuffer);
    }
  }
This should be called after {@link #executeFromValidate}.
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/impl/subscription/topic/AlterTopicProcedure.java