le</strong>  &#x21d2; <tt>URI|<span class='object_link'><a href="Component.html" title="Brut::FrontEnd::Component (class)">Brut::FrontEnd::Component</a></span></tt>, ... 
  

  

  
</h3><div class="docstring">
  <div class="discussion">
    <p>Override this to performa any checks before <span class='object_link'><a href="#handle-instance_method" title="Brut::FrontEnd::Handler#handle (method)">#handle</a></span> is called.  This should
return <code>nil</code> if <span class='object_link'><a href="#handle-in