title: Prestashop template hook call
body: <p>I want to call a hook from template like this:</p>
  
  <pre><code>{hook h='displayCustom' mod='customcontent'}
  </code></pre>
  
  <p>I created a new hook and added method to module like this:</p>
  
  <pre><code>  $this-&gt;registerHook('displayCustom');
  
    public function hookDisplayCustom($params) {
  
        return $this-&gt;display(__FILE__, 'customcontent.tpl');
  
    } 
  </code></pre>
  
  <p>I see that module triggered but there is no output. How can i fix it?
  Prestashop 1.6, customcontent.tpl contents simple text 'TEST'.</p>