Can you extend the set of server-side tags Pinegrow supports?

I need to author Jinja templates using Pinegrow, these look like this:

{% for item in navigation %}
    <li><a href="{{ item.href }}">{{ item.caption }}</a></li>
{% endfor %}

Is there anyway, using the plugin API, or some other mechanism. To allow Pinegrow to understand service-side tags in that {% form not just the <% format?

Would also love to see this @PineGrow! This would be HUGE for us Python backend developers.

Right now we have to insert these blocks manually and it’s very widely used so would be a great addition plus another big selling point!

Here’s a link to their docs.