Copy a GXml.DomNode relaying on GXml.DomDocument to other GXml.DomNode.
node could belongs from different GXml.DomDocument, while source is a node belonging to given document.
Only GXml.DomElement objects are supported. For attributes, use GXml.DomElement.set_attribute method, passing source's name and value as arguments.
| doc |
a GXml.DomDocument owning destiny node |
| node |
a GXml.DomElement to copy nodes to |
| source |
a GXml.DomElement to copy nodes from, it could be holded by different GXml.DomDocument |