Invoking a portlet from other portlet

HI everyone,

I am new to vaadin development, I have a requirement where in I need to invoke a portlet from other portlet, both these portlets are deployed as different WAR in the same server.

Ex: I have a
portlet “A”
, on click of some button in portlet “A” , I need to display
portlet “B”
content in a pop up.

Any suggestion is apprciated.

Thanks In advance