code: public void unsetActiveSession() {
  		if (log.isInfoEnabled()) {
  			log.info("Setting no active session for site '" + site + "'.");
  		}
  
  		if (this.activeSession != null) {
  			this.activeSession.setActive(false);
  			// If the active session was one with no tokens, delete it, at it will probably not
  			// match anything from this point forward
  			if (this.activeSession.getTokenValuesCount() == 0) {
  				this.removeHttpSession(this.activeSession);
  			} else {
  				// Notify the model that the session is updated
  				model.fireHttpSessionUpdated(this.activeSession);
  			}
  
  			this.activeSession = null;
  		}
  	}
docs: Unset any active session for this site.
  
  @see #setActiveSession(HttpSession)