provide content assist (code completion) for ui:params defined properties

When using this:

<ui:param name="user" value="#{client.user}" />

and typing

#{user.username}

then code completion does not work, because jboss tools cannot handle code completion from ui:param defined names.

Content assist does also not work when using something like this:

<ui:include src="WEB-INF/tpl/task.xhtml"> 
    <ui:param name="tasks" value="#{all.tasks}" />
</ui:include>

when using

#{tasks.?} 

in task.xhtml, then code completion does also not work.

Please provide code completion for such cases.