@Override
    protected List<T> fetchNextPage() {
        return marshalParallelScanResultsIntoObjects(parallelScanTask.getNextBatchOfScanResults());
    }
The current parallel scan task which contains all the information about the scan request
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/datamodeling/PaginatedParallelScanList.java