title: Shopware hook LegacyStructConverter problems
body: <p>I`m trying subscribe hook for public method convertListProductStruct of LegacyStructConverter.<br>
  <em>Path \Shopware\Components\Compatibility\LegacyStructConverter</em></p>
  
  <p>My code:   </p>
  
  <pre><code>$this-&gt;subscribeEvent(
              'LegacyStructConverter::convertListProductStruct::after',
              'afterListProductStruct'
      );
  </code></pre>
  
  <p>But event does not appear :( What I`m doing wrong ? </p>