@Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (!(o instanceof PiCounterCellData)) {
            return false;
        }
        PiCounterCellData that = (PiCounterCellData) o;
        return packets == that.packets &&
                bytes == that.bytes;
    }
@Test
    public void testEquals() {
        new EqualsTester()
                .addEqualityGroup(PI_COUNTER_DATA_1, SAME_AS_PI_COUNTER_DATA_1)
                .addEqualityGroup(PI_COUNTER_DATA_2)
                .testEquals();
    }