Nodejs: parsing with multipart

Im working on this tutorial which is obviously old http://www.componentix.com/blog/13/file-uploads-using-nodejs-once-again

im having issues with this method

function parse_multipart(req) {
var parser = multipart.parser();

// Make parser use parsed request headers
parser.headers = req.headers;

// Add listeners to request, transfering data to parser

req.addListener("data", function(chunk) {
    parser.write(chunk);
});

req.addListener("end", function() {
    parser.end();
});

return parser;

}

i'm getting back that .parser() has no method, I assume it changed to something else now?