client.getTask(sums.get(0).getId(), getTaskHandler);
Task operatorTask = getTaskHandler.getTask();
BlockingGetContentResponseHandler getContentHandler = new BlockingGetContentResponseHandler();
client.getContent(operatorTask.getTaskData().getDocumentContentId(), getContentHandler);
Content content = getContentHandler.getContent();
assertNotNull(content);
ByteArrayInputStream bais = new ByteArrayInputStream(content.getContent());
ObjectInputStream ois = new ObjectInputStream(bais);
Map<String, Object> deserializedContent = (Map<String, Object>) ois.readObject();
Call retrivedCall = (Call) deserializedContent.get("call");