@Override public HashSlotCursor12byteKey cursor() {
        return new CursorIntKey2();
    }
@Test
    public void testCursor_key1() {
        final long key1 = randomKey();
        final int key2 = randomKey();
        insert(key1, key2);

        HashSlotCursor12byteKey cursor = hsa.cursor();
        cursor.advance();
        assertEquals(key1, cursor.key1());
    }