title: MarkLogic search in a particular file
body: <p>I am using below.</p>
  
  <pre><code>QueryManager queryMgr = dbClient.newQueryManager();     
  StringQueryDefinition query = queryMgr.newStringDefinition();       
  // Some text eg. "test"
  query.setCriteria(criteria);        
  SearchHandle resultsHandle = new SearchHandle();        
  queryMgr.search(query, resultsHandle);
  </code></pre>
  
  <p>this does the search in all the docs. </p>
  
  <p>How I can reuse this to make the search in a particular file?</p>