FXmlFile FXmlNode how to edit a node

Hi, I’m porting to UE some code from a previous project which was using XML structures. So far I’ve used FXmlFile and FXmlNode, it works pretty well. The problem is there is a part of the code where I need to edit one attribute of a node. I see there are no public methods in FXml* for this. There are few which may seem useful, but are private to the class, and I cannot access from my code. Can someone please suggest what is the best way to edit an XML structure in FXmlFile? Is there an extension to overcome this? Can a feature request be submitted to add the editing capabilities?