assertEquals(20, validator.safeMultiply(4, 5));
        assertEquals(-20, validator.safeMultiply(-4, 5));
        assertEquals(0, validator.safeMultiply(0, 1000));
    }

    @Test
    public void testSafeMultiplyOverflow() throws Exception {
        assertThrows(SmbException.class, () -> {
            validator.safeMultiply(Integer.MAX_VALUE, 2);
        });
    }

    @Test