Manipulate GEXF file format with Pharo.

Metacello new
  githubUser: 'badetitou' project: 'PharoGEXF' commitish: 'main' path: 'src';
  baseline: 'GEXF';
  load

1. Create a gexf element

   gexf := GEXF new.

2. Set metadata

   gexf metadata creator: 'Gephi.org'.
   gexf metadata description: 'A Web network'.

3. Add nodes

   node1 := graph createNodeWithId: '0'.
     node1 label: 'Hello'.
     node2 := graph createNodeWithId: '2'.
     node2 label: 'World'.

4. Connect nodes

   node1 connectTo: node2.

5. Export file

   String streamContents: [:stream |
       (GEXFWriter on: stream)
   	    prettyPrinting;
    	    export: gexf ]