Replacement for PortletListener in Versions later than 7.1.8 ?

Hi at all,
at the moment I am using 7.1.8 for the Liferay portlets, this seems to be the latest version containing the VaadinPortletSession.PortletListener. This listener is used to notice ResourceRequests which trigger portlet’s view changes. I would prefer not to give up that functionality in further versions.
So, how would this be done in the actual Vaadin versions?
Thanks in advance…

Vaadin 7.2, 7.3 and probably also 7.4 still support VaadinPortletSession.PortletListener even though the containing class is marked as deprecated.

If it is removed in later versions, similar API elsewhere should replace it so probably minimal changes will be needed in applications in that case - perhaps just changing an import and how the listener is registered.