d60227ba_MDServlet___simonstl_com__Usage
[Parameter] contentType [Usage] 
The MIME type that will be used for the Content-type header. Currently defaults to text/xml. (May change to application/xml in future versions.) Specifying a different value is useful if your servlet is sending out something besides XML. I use text/plain when testing, personally, as it lets me look at the XML to make sure transformations took place as expected.
MDServlet - simonstl.com
Usage