@Override
    public String toString() {
        return "ID: " + this.id +
                "\tSequence: " + (this.sequenceNumber + 1) + // +1 for readability: 1/2 not 0/2
                "/" + this.sequenceCount +
                "\tArrival: " + this.arrival +
                "\tData size: " + this.payload.readableBytes();
    }
@Test
    public void testToString() throws Exception {
        assertNotNull(buildChunk().toString());
    }