questions about gdome_di_saveDocToMemory ()

Hi all
 
For exporting a project to other plattforms I have to decide which
DOM-Parser to use.
It's very important for this project to get the current textual
representation of a Node at any time.
 
The function gdome_di_saveDocToMemory() seems the right way to do this
for a Document - after the call
the textual representation should be in the buffer char* mem...
 
So my question is: can I simply call the gdome_di_saveDocToMemory() with
a GdomeNode instead of a GdomeDocument
to get the textual representation of this special Node or do I have to
create a new GdomeDocument, import the Node, make it to Root 
and call gdome_di_saveDocToMemory() ?
 
thank you & greetings
  Bernd Truckses