public ApnsServiceBuilder withProductionDestination() {
        return withGatewayDestination(PRODUCTION_GATEWAY_HOST, PRODUCTION_GATEWAY_PORT)
        .withFeedbackDestination(PRODUCTION_FEEDBACK_HOST, PRODUCTION_FEEDBACK_PORT);
    }
Specify to use the Apple Production servers as iPhone gateway
and feedback servers.

This is desired when sending notifications to devices with
a production provision (whether through App Store or Ad hoc
distribution).

@return  this
src/main/java/com/notnoop/apns/ApnsServiceBuilder.java