Strange XML structrue after Facebook call.

I am trying to access profile data via the Facebook Graph Api like described here:

I have to say. I am very unexperienced with XML.

So this might be a real noob question.

what I get is an XMLElemn which looks like this:

<<?xml version="1.0" encoding="UTF-8"?>
<Users_getInfo_response xmlns="http://api.facebook.com/1.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://api.facebook.com/1.0/ http://api.facebook.com/1.0/facebook.xsd" list="true">
<user>
<uid>1477411208</uid>
<first_name>Marc</first_name>
<last_name>Tiedemann</last_name>
</user>
</Users_getInfo_response>/>

looks good to me. but when I try to access the children, i get null back!

instead everything seems to be root!

console output:

childs false
root <?xml version="1.0" encoding="UTF-8"?>
<Users_getInfo_response xmlns="http://api.facebook.com/1.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://api.facebook.com/1.0/ http://api.facebook.com/1.0/facebook.xsd" list="true">
<user>
<uid>1477411208</uid>
...

I also read that this method of getting info from the Graph API is kinda outdated. As REST got depriciated.

Does anybody have a running example of how you could do this better?

As said I am very very new to this kind of coding and happy for any hint's in the right direction.