title: Laravel Error: Call to undefined method class::seeJsonStructure()
body: <p>do i need to use some namespaces or something?
  here's the code:</p>
  
  <pre><code>$response = $this-&gt;call('POST', 'admin/apps/list', []);
  $this-&gt;seeJsonStructure([...]);
  </code></pre>