As of 12.1.2, replaced by @oracle.wsm.metadata.annotation.CallbackPolicySet (used with @oracle.wsm.metadata.annotation.PolicyReference)
@Deprecated
@Retention(value=RUNTIME)
@Target(value={TYPE,METHOD,FIELD,ANNOTATION_TYPE})
public @interface CallbackMtomPolicy
Use this annotation to enable or disable the MTOM policy while sending the asynchronous response to the client's callback service. This annotation is applicable only to asynchronous web service implementation classes that are annotated with AsyncWebService annotation.