FileSourceDGS source = new FileSourceDGS();
Graph g = new AdjacencyListGraph("eol");
source.addSink(g);
g.addSink(new TestAttributeRemoved("A", g));
g.addSink(new VerboseSink());
source.begin(getClass().getResourceAsStream("data/removeAttribute.dgs"));
while (source.nextStep())
;