title: Backward Compatibility when adding a field in response of an API
body: <p>I have added a couple of new fields to a Json response of an object .It rus fine when we update the client to hit the API . But older versions of the API give a serialization error. I am using <strong>PROTOSTUFF</strong> to serialize and deserialize the object . How can I make the old version of client to ignore the new fields and continue to work properly .
  I have tried making the <strong>fields transient and @JsonIgnore</strong> Tag </p>