title: Nesting :after of :last-child with LESS
body: <p>Using LESS I need to remove an :after property within an element's :last-child.</p>
  
  <pre><code>li {
      &amp;:after {
          content: '/';
      }
      &amp;:last-child {
          &amp;:after {
              content: '';
          }
      }
  }
  </code></pre>
  
  <p>This is obviously not correct nesting - what am I missing?</p>