| success | Indicates if the request succeeded. |
| extendedInfo | If success is false, this will contain a text string indicating the reason. |
| responseData | The generic passed in containing data required by the callback. This typically contains data returned from a call to the service backend. |
Response delegate containing basic information plus a data member. This is used on a subset of MatchMaker callbacks that require data passed in along with the success/failure information of the call itself.