title: How to get json string for a searchHit?
body: <p>Everytime I try to do <code>searchHit.sourceAsString()</code> or <code>searchHit.getSourceAsString()</code>, I get <code>null</code> back. But if I try <code>searchHit.getFields()</code> -> it will give me a <code>Map[String, SearchHitField]</code> and then I can get necessary fields back from it - which I don't want to do. That is because I want to use <code>Lift-json</code> library to parse "if obtained" <code>json</code> string from <code>searchHi</code>t in my case class. Any ideas?</p>