title: Elasticsearch - search_type as a body parameter
body: <p>I am a bit fighting with specifying search_type as a body parameter. As a query parameter that is just fine and works but haven't found single example in manual where it is specified as a query parameter.</p>
  
  <pre><code>POST /index/type/_search
  {
   "search_type": {"query_then_fetch"}, 
   "explain": false,
       "query" : { 
           "query_string": {
              "default_field": "adress.city",
              "query": "London"
           }
       }
  }
  </code></pre>
  
  <p>Any hints?</p>
  
  <p>Thx</p>