I'm trying to not display the empty <div class="slideshow">empty!</div> if there is no images selected in the assets. Right now it displays the empty div.slideshow

template:

{{ if "slideshow" }}
<div class="slideshow">
  {{ assets:slideshow }}
  <div class="slideshow-image">
    <div class="slideshow-image-headlines">
      <h2>{{ subheadline }}</h2>
      <h3>{{ headline }}</h3>
    </div>

    <img src="{{ glide:url width="2048" fit="crop" }}" alt="{{ alt }}"/>
  </div>
  {{ /assets:slideshow }}
</div>
{{ /if }}

Fieldset:

title: Flexible
sections:
  main:
    display: Main
    fields:
      template:
        type: template
      header_image:
        container: slideshow
        folder: /
        restrict: false
        max_files: 1
        type: assets
        display: 'Header Image'
      slideshow:
        container: slideshow
        folder: /
        restrict: false
        max_files: 10
        type: assets
        display: Slideshow
      blocks:
        type: replicator
        sets: