title: Search though accounts on flask-stormpath
body: <p>I have a <code>flask.ext.stormpath</code> instance and I would like to fetch all users (filtered with <code>created_at</code>)
  I have tried several stuff that are not working</p>
  
  <pre><code>flask.ext.stormpath.accounts
  </code></pre>
  
  <p>Sorry for the short question but for clarity, I think I need something like this
  <a href="https://docs.stormpath.com/rest/product-guide/latest/reference.html#search-filter" rel="nofollow">https://docs.stormpath.com/rest/product-guide/latest/reference.html#search-filter</a></p>