Converting JSON to XML null?
===

When I convert XML to JSON and the XML field null I get something I get a null returned in the JSON, is this the expected JSON output? im using it for a web service. 

Could I turn null off, so that it displays blank/empty.

XML

    <GetItemRequest>
    	<ApplicationCrediential>
    		<ConsumerKey></ConsumerKey>
    		<ConsumerSecret></ConsumerSecret>
    	</ApplicationCrediential>
    </GetItemRequest>

JSON

    {
      "GetItemRequest": {
        "ApplicationCrediential": {
          "ConsumerKey": null,
          "ConsumerSecret": null
        }
      }
    }

