/** Verifies the timestamp. */
protected void verifyTimestamp(List<WSSecurityEngineResult> results) throws WSSecurityException {
WSSecurityEngineResult actionResult = WSSecurityUtil.fetchActionResult(results, WSConstants.TS);
if (actionResult != null) {
Timestamp timestamp = (Timestamp) actionResult.get(WSSecurityEngineResult.TAG_TIMESTAMP);
if (timestamp != null && timestampStrict) {
Credential credential = new Credential();
credential.setTimestamp(timestamp);
RequestData requestData = new RequestData();