s method 
 must be thread safe.

 <p>
 QueryResponseWriter's must implement this method to return a valid 
 HTTP Content-Type header for the request, that will logically 
 correspond with the output produced by the write method.
 </p></div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../org/apache/solr/response/QueryResponseWriter.html#getContentType(org.apache.solr.request.SolrQueryRequest,%20org.apache.solr.response.SolrQueryResponse)">getContentType</a></code>&nbsp;in interfa