assertEquals("33", g1.getPrefix());
    public void testUpdateGateway() throws Exception {        Gateway g1 = new Gateway();        g1.setAddress("10.1.1.1");        m_context.storeGateway(g1);        g1.setAddress("10.1.1.2");        m_context.storeGateway(g1);        assertEquals("10.1.1.2", g1.getAddress());    }