This is what I currently use in several templates for full view of classes with keywords:
{let related=$node.object.data_map.keywords.content.related_objects}
{section show=$related}
<h3>Related documents containing one or more of the same keywords</h3>
<ol>
{section name=Related loop=$related}
<li><a href={$:item.url_alias|ezurl}>{$:item.name}</a></li>
{/section}
</ol>
{/section} {/let}