title: How to find edges with Spring Data ArangoDB
body: <p>When using AQL directly to find edge documents, with a query like</p>
  
  <pre><code>FOR x IN coll1ToColl2 FILTER x._from == 'coll1/1234' RETURN x
  </code></pre>
  
  <p>the expected edge documents are returned, but when supplying <code>'coll1/1234'</code> to a Spring Data ArangoDB repository query method like:</p>
  
  <pre><code>@Query("FOR x IN coll1ToColl2 FILTER x._from == @from RETURN x")
  Iterable&lt;Coll1ToColl2&gt; findEdgesFromColl1(@Param("from") String from);
  </code></pre>
  
  <p>the response is <code>null</code>.</p>
  
  <p>How can edges be retrieved with Spring Data ArangoDB?</p>
  
  <p>I'm using version <code>3.1.1</code> of the framework against version <code>3.4.0</code> of the database.</p>