@Override
    public void clear() {
        items.clear();
    }
@Test
    public void testClear() throws Exception {
        //Tests clearing the map
        assertTrue("Map was initialized incorrectly, should be empty.", map.isEmpty());
        fillMap(10);
        assertFalse("Map should contain entries now.", map.isEmpty());
        map.clear();
        assertTrue("Map should have been cleared of entries.", map.isEmpty());

    }