Overriding h:outputFormat

Question

I'd like to extend the functionality of h:outputFormat JSF (2.2) tag or component. I'd like pass parameters by their name instead of by their order, e.g.:

<h2:outputFormat value="This is a ${code} text.">
    <f:param name="code" value="sample" />
</h2:outputFormat>

Which classes have I to override?