@Override
        public void setPartitionLeaderEpoch(int epoch) {
            throw new UnsupportedOperationException("Magic versions prior to 2 do not support partition leader epoch");
        }
Get an iterator for the nested entries contained within this batch. Note that
if the batch is not compressed, then this method will return an iterator over the
shallow record only (i.e. this object).
@return An iterator over the records contained within this batch
clients/src/main/java/org/apache/kafka/common/record/AbstractLegacyRecordBatch.java