@Override
    public Iterable<MappingEntry> getMappingEntries(Type type, DeviceId deviceId) {
        return store.getMappingEntries(type, deviceId);
    }
@Test
    public void getMappingEntries() {

        assertTrue("Store should be empty", Sets.newHashSet(
                service.getMappingEntries(MAP_DATABASE, LISP_DID)).isEmpty());
        addMapping(MAP_DATABASE, 1);
        addMapping(MAP_DATABASE, 2);
        assertEquals("2 mappings should exist", 2, mappingCount(MAP_DATABASE));

        addMapping(MAP_DATABASE, 1);
        assertEquals("should still be 2 mappings", 2, mappingCount(MAP_DATABASE));
    }