@Override
  public String toString() {
    return "PurgeResponse[" + "ServerErrorCode=" + getError() + "]";
  }
Helper to help construct {@link PurgeResponse} from the {@code stream}.
@param stream the stream to read bytes from
@return a {@link PurgeResponse} based on data read from the {@code stream}
@throws IOException if there was any problem reading the stream
ambry-protocol/src/main/java/com/github/ambry/protocol/PurgeResponse.java