How to make WPQuery custom post type work in Twig / Timber

Question

I think is as simple as using Timber’s Timber::get_posts() instead of the WP_Query class:

$context['testimonials'] = Timber::get_posts( ['post_type' => 'what_our_clients_say', 'posts_per_page' => 2] );
Timber::render('whatever.twig, $context);

… from there you can loop through the testimonials and access ACF values via meta:

{% for post in testimonials %}
    <h1>{{ post.attribution }} says:</h1>
    {# more here #}
{% endfor %}