code: private void initialize() {
  		this.addActionListener(new java.awt.event.ActionListener() {
  			@Override
  			public void actionPerformed(java.awt.event.ActionEvent e) {
  				// Get the HttpSessionsSite
  				HttpSessionsPanel panel = extension.getHttpSessionsPanel();
  				HttpSessionsSite site = panel.getCurrentHttpSessionSite();
  				if (site == null)
  					return;
  
  				// Unset the active session, no matter the current selection is, as the popup menu
  				// is always only enabled on active session
  				site.unsetActiveSession();
  			}
  		});
  
  	}
docs: Initialize the popup menu.