What is GML? 
When I export, say in .png, I can select the direction when I want the file to be created.

I have a bad internet connection, I could not check the last version of Moose 

I do not know what is GML.
The point is:
when you are on package group, right click, in visualization there is "export in GML".
It does not ask for a name and a directory.

GML is a graph format used by Gephi, a graph visualization engine.
In FAMIX-Extension.190

This code made the Moose Finder tests to hang because it opens a modal dialog that apparently
does not provide a notification.

So, for the moment I had to comment the code. We have to make the tests better.

On another note, I do not see why this method should actually be in main distribution
Moose. Its uses are very narrow, it hardcodes the actual output string, and I guess
only one person ever used it :). It should at most be an extension somewhere else.
A more interesting development would be to have the exporter part of Mondrian. So,
unless there are good reasons for keeping it, we should delete it.

These modal dialog are indeed a problem for testing.
I also not sure how this method end up here. I easily believe that Jean-Remy wanted
an exporter for Gephi. Gephi is indeed interesting. 
We could create a new package GMLExporter and move this method in that package. Or
simply delete it and wait for one day to have someone write a real exporter.
Not that this facility has nothing to do with Mondrian.

I removed the gml-related methods, so I close the issue.

However, the testing issue still remains.