@Override
        public String toString() {
            return "OffsetAndDeliveryCount{" +
                    "offset=" + offset +
                    ", deliveryCount=" + deliveryCount +
                    "}";
        }
Parse the record entry, deserializing the key / value fields if necessary
clients/src/main/java/org/apache/kafka/clients/consumer/internals/ShareCompletedFetch.java