private HttpResponse content(ContentRequest request, String urlBase) {
        ApplicationFile file = request.getExistingFile();
        if (file.isDirectory()) {
            return new SessionContentListResponse(urlBase, listSortedFiles(file, request.getPath(), request.isRecursive()));
        }
        return new SessionContentReadResponse(file);
    }
Requests for content and content status, both for prepared and active sessions,
are handled by this class.

@author hmusum
configserver/src/main/java/com/yahoo/vespa/config/server/http/ContentHandler.java