@Override public long get(long key1, int key2) {
        return super.get0(key1, key2);
    }
@Test
    public void testClear() {
        final long key1 = randomKey();
        final int key2 = randomKey();

        insert(key1, key2);
        hsa.clear();

        assertEquals(NULL_ADDRESS, hsa.get(key1, key2));
        assertEquals(0, hsa.size());
    }