input='<pre><code lang="plantuml">Bob -> Sara : Hello</code></pre>'
input=ifFeature.enabled?(:use_cmark_renderer)
'<pre lang="plantuml"><code>Bob -> Sara : Hello</code></pre>'
else
'<pre><code lang="plantuml">Bob -> Sara : Hello</code></pre>'
end
output='<div class="listingblock"><div class="content"><pre class="plantuml plantuml-error"> Error: cannot connect to PlantUML server at "invalid"</pre></div></div>'