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

        docList.addProcessingTime(10);
        assertEquals(10, docList.getProcessingTime());

        docList.addProcessingTime(20);
        assertEquals(30, docList.getProcessingTime());

        docList.addProcessingTime(5);
        assertEquals(35, docList.getProcessingTime());
    }

    @Test

                docList.addContentSize(contentSize);
                final long processingTime = systemHelper.getCurrentTimeAsLong() - startTime;
                docList.addProcessingTime(processingTime);

                if (docList.getContentSize() >= maxDocumentRequestSize || docList.size() >= maxDocumentCacheSize) {
                    indexingHelper.sendDocuments(searchEngineClient, docList);