public static String deviceTokenForId(int id)
    {
        final String right = Integer.toHexString(id).toUpperCase();
        final int zeroedLength = 64 - right.length();
        return Strings.repeat("0", zeroedLength) + right;
    }
Provides a simulator that receives connection over TCP as per a real APNS server.  This class allows verification
and prior configuration of responses in a manner similar to a mocking framework.
src/test/java/com/notnoop/apns/utils/Simulator/ApnsSimulatorWithVerification.java