title: Getting specified fields from ElasticSearch
body: <p>I am using the below query builder from my java class </p>
  
  <pre><code>SearchSourceBuilder()
                  .query(BoolQueryBuilder()
                          .filter(QueryBuilders
                                  .termQuery("cities.id", cityId)))
  </code></pre>
  
  <p>It's returning me all the properties of the cityId it matches. But I just need the name of the city.</p>
  
  <p>How can I accomplish it ?</p>