public static <T> ArrayBatchRecords<T> finishedSplit(String splitId) {
        return new ArrayBatchRecords<>(null, null, null, 0, 0, 0, Collections.singleton(splitId));
    }
Create ab ArrayBatchRecords with only finished split id

@param splitId for the split that is just exhausted
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/iceberg/src/main/java/org/apache/inlong/sort/iceberg/source/reader/ArrayBatchRecords.java