at_theme-1.4.1/at_core/templates/content/aggregator-item.html.twig

{#
/**
 * @file
 * Theme override to present a feed item in an aggregator page.
 *
 * Available variables:
 * - url: URL to the originating feed item.
 * - title: Title of the feed item.
 * - content: All field items. Use {{ content }} to print them all,
 *   or print a subset such as {{ content.field_example }}. Use
 *   {{ content|without('field_example') }} to temporarily suppress the printing
 *   of a given element.
 *
 * @see template_preprocess_aggregator_item()
 */
#}
<article{{ attributes.addClass('aggregator-item') }}>
  {{ title_prefix }}
  <h3 class="feed-item-title">
    <a href="{{ url }}">{{ title }}</a>
  </h3>
  {{ title_suffix }}
  {{ content }}
</article>