bs-carousel.html.twig in Bootstrap Kit 8.3

{% if content %}
{% set id = random() %}
<div {{ attributes.addClass('carousel slide').removeAttribute('id') }} data-ride="carousel" id="carousel-{{ id }}">

  <!-- Indicators -->
  <ol class="carousel-indicators">
    {% for region in layout.getRegionNames if content[region] %}
    <li class="{{ loop.first ? 'active' }}" data-target="#carousel-{{ id }}" data-slide-to="{{ loop.index0 }}"></li>
    {% endfor %}
  </ol>

  <!-- Slides -->
  <div class="carousel-inner">
    {% for region in layout.getRegionNames if content[region] %}
    <div class="item {{ loop.first ? 'active' }}">
      {{ content[region] }}
    </div>
    {% endfor %}
  </div>

  <!-- Controls -->
  <a class="left carousel-control" href="#carousel-{{ id }}" data-slide="prev">
    <span class="glyphicon glyphicon-chevron-left"></span>
  </a>
  <a class="right carousel-control" href="#carousel-{{ id }}" data-slide="next">
    <span class="glyphicon glyphicon-chevron-right"></span>
  </a>

</div>
{% endif %}