{%
set classes = [
'block',
'block-' ~ configuration.provider|clean_class,
'block-' ~ plugin_id|clean_class,
]
%}
<div{{ attributes.addClass(classes) }}>
  {{ title_prefix }}
  {{ title_suffix }}
  {% block content %}
    <ul class="language-wrapper">
      <li class="language-switcher has-children">
        {{ content }}
      </li>
    </ul>
  {% endblock %}
</div>