/** * Retrieves the requested tags from a <code>ListObjectsRequest</code>. * * @param req a <code>ListObjectsRequest</code> * @return the tags required by the request */ private String[][] tagsOfRequest(ListObjectsRequest req) { if (req instanceof ListObjectsRequest2) return ((ListObjectsRequest2) req).getTagConstraint(); else return simpleTagsConjunction(req.getTags()); } }