* @param contentSize the content size to add in bytes
     */
    public void addContentSize(final long contentSize) {
        this.contentSize += contentSize;
    }

    /**
     * Gets the total processing time for all documents in this list.
     *
     * @return the total processing time in milliseconds
     */
    public long getProcessingTime() {
        return processingTime;
    }

    /**

            long contentSize = 0;
            while (entries.hasMoreElements()) {
                final LhaHeader head = entries.nextElement();
                contentSize += head.getOriginalSize();
                if (maxContentSize != -1 && contentSize > maxContentSize) {
                    throw new MaxLengthExceededException("Extracted size is " + contentSize + " > " + maxContentSize);
                }

        synchronized (docList) {
            docList.add(ingest(paramMap, dataMap));
            final long contentSize = indexingHelper.calculateDocumentSize(dataMap);
            docList.addContentSize(contentSize);
            final long processingTime = systemHelper.getCurrentTimeAsLong() - startTime;
            docList.addProcessingTime(processingTime);

            ZipArchiveEntry entry = null;
            long contentSize = 0;
            while ((entry = (ZipArchiveEntry) ais.getNextEntry()) != null) {
                contentSize += entry.getSize();
                if (maxContentSize != -1 && contentSize > maxContentSize) {
                    throw new MaxLengthExceededException("Extracted size is " + contentSize + " > " + maxContentSize);
                }

    }

    public void test_toString_empty() {
        DocList docList = new DocList();
        String result = docList.toString();

        assertTrue(result.contains("contentSize=0"));
        assertTrue(result.contains("processingTime=0"));
        assertTrue(result.contains("elementData=[]"));
    }

    public void test_toString_with_data() {
        DocList docList = new DocList();

            TarArchiveEntry entry = null;
            long contentSize = 0;
            while ((entry = (TarArchiveEntry) ais.getNextEntry()) != null) {
                contentSize += entry.getSize();
                if (maxContentSize != -1 && contentSize > maxContentSize) {
                    throw new MaxLengthExceededException("Extracted size is " + contentSize + " > " + maxContentSize);
                }

            synchronized (docList) {
                docList.add(ingest(paramMap, dataMap));
                final long contentSize = indexingHelper.calculateDocumentSize(dataMap);
                docList.addContentSize(contentSize);
                final long processingTime = systemHelper.getCurrentTimeAsLong() - startTime;
                docList.addProcessingTime(processingTime);

                    updateDocument(map);

                    docList.add(ingest(accessResult, map));
                    final long contentSize = indexingHelper.calculateDocumentSize(map);
                    docList.addContentSize(contentSize);
                    final long processingTime = systemHelper.getCurrentTimeAsLong() - startTime;
                    docList.addProcessingTime(processingTime);

	reader, err := fn(obj, h, closeReader)
	if err != nil {
		return nil, proxy, err
	}
	reader.ObjInfo = oi.Clone()
	if rs != nil {
		contentSize, err := parseSizeFromContentRange(h)
		if err != nil {
			return nil, proxy, err
		}
		reader.ObjInfo.Size = contentSize
	}

	return reader, proxyResult{Proxy: true}, nil
}