private Feeder createFeeder(SimpleFeedAccess sender, InputStreamRequest request) {
        if ( ! Boolean.parseBoolean(request.getProperty(JSON_INPUT))) {
            return new XMLFeeder(getDocumentTypeManager(), sender, getRequestInputStream(request));
        }
        return new JsonFeeder(getDocumentTypeManager(), sender, getRequestInputStream(request));
    }
Feed documents from a com.yahoo.container.handler.Request.

@author Thomas Gundersen
@author steinar
vespaclient-core/src/main/java/com/yahoo/feedhandler/VespaFeedHandler.java