private void processCsnControl(PostOperationOperation operation) {
List<Control> requestControls = operation.getRequestControls();
if ((requestControls != null) && (! requestControls.isEmpty())) {
for (Control c : requestControls) {
if (c.getOID().equals(OID_CSN_CONTROL)) {
OperationContext ctx = (OperationContext)
operation.getAttachment(OperationContext.SYNCHROCONTEXT);
if (ctx != null) {
ChangeNumber cn = ctx.getChangeNumber();
if (cn != null) {
Control responseControl =
new ChangeNumberControl(c.isCritical(), cn);
operation.getResponseControls().add(responseControl);
}