@Override
    public void onFinishedBatch(List<MessageRecord> messageRecordList) {
        messageRecordList.forEach(this::onFinished);
    }
The callback function that SortSDK invoke when fetch messages batch

@param messageRecordList List
inlong-sort-standalone/sort-standalone-source/src/main/java/org/apache/inlong/sort/standalone/source/sortsdk/FetchCallback.java