     //  contentType
     //------------------------------------
 
-    private var _contentType:String = "application/json";
+    private var _contentType:String = DEFAULT_CONTENT_TYPE;
 
     public function contentType(value:String):RestClient
     {

        _headers = null;
        _params = null;
        _fields = null;
        _contentType = "application/json";
        _responseContentType = "application/json";
        _accessTokenKey = null;
        _accessTokenValue = null;
        accessTokenSpecified = false;

        }
    }

    private var _responseContentType:String = DEFAULT_RESPONSE_CONTENT_TYPE;

    skein_internal function setResponseContentType(value:String):void
    {
