jsf includeable fragment with parameter: how do I make Intellij know the object type?

I'm working on a JSF project, using .xhtml files.

Now, I extracted a part of one .xhtml file into an includeable fragment, specifying the object as parameter. The include statement looks similar to this:

<ui:include src="/fragments/my_new_fragment.xhtml">
  <ui:param name="contactPerson" value="#{contactPersonBean.currentContactPerson}"/>
</ui:include>

and in the new fragment I use the passed object like this:

<h:outputText value="#{contactPerson.firstName}"/>

This works perfectly at runtime, but the extracted fragment is cumbersome to edit, because Intellij does not know what object type "contactPerson" is. And this disables e.g. auto completion for the fields of contactPerson.

When editing the fragment, Intellij proposes "Declare external variable as <jsp:useBean>" but this does not work, because "Namespace 'jsp' is not bound".

So, I either need to bind this namespace (but I could not find the URL to bind it to) or use another way to declare the object. I'm also a bit confused about the "jsp:" despite I'm not working on a jsf (not jsp) project.

I'm also unsure if using "jsp" tags will break the application at runtime. At least while it's not bound, it produces an error.

It's important that I only want to declare the type of the variable, not set a value as in <c:set> (jstl).