title: Can't pass several path parameters in Vaadin using RouterLink
body: <p>I'm new to Vaadin and trying to understand how to make View to get several parameters from URL.
  For example</p>
  
  <pre><code>http://www.some.com/book/18/page/41
  </code></pre>
  
  <p>Numbers 18 and 41 are parameters.</p>
  
  <p>I've found that I can implement <code>HasUrlParameter&lt;T&gt;</code> and then use <code>setParameter</code> method, but it can be used only for one parameter.</p>