void setSavedToDB(boolean savedToDB) {
        this.savedToDB = savedToDB;
        if (savedToDB && parentIdentifier != null) {
            // Notify the parent that he has a new child :)
            getParent().addChildNode(this);
        }
    }
Sets the URL of an XSL transformation which can be applied to the payload format
in order to generate a valid Data Forms result that the client could display
using a generic Data Forms rendering engine.

@param dataformXSLT the URL of an XSL transformation which can be applied to the
       payload format.
xmppserver/src/main/java/org/jivesoftware/openfire/pubsub/Node.java