Hello @AMofidy-Rouhi
Do you mean you want only a Refresh Response (IMAGE) message? If so, the EMA Java API supports snapshot requests by setting the ReqMsg's interestAfterRefresh property to false.
Example:
consumer.registerClient(reqMsg.serviceName("DIRECT_FEED").name("IBM.N").interestAfterRefresh(false), appClient);
You can find more detail in the EMA Java example application ex102_MP_Snapshot in the SDK package.
cheers,
Ali