synchronized (this.sessionTable) {
log.debug("Checking sessions");
Enumeration keys = this.sessionTable.keys();
while (keys.hasMoreElements()) {
String tempId = (String) keys.nextElement();
ConversationSession session =
(ConversationSession) this.sessionTable.get(tempId);
synchronized (session) {
log.debug("Session: " + tempId);
if (this.isExpirable(session))
this.expireSession(tempId);