Connections connections = new Connections();
for(Step s : workflow.getSteps()){
Pair<GraphObject, LoniEnvironment> dat;
dat = (Pair<GraphObject, LoniEnvironment>) stepVisitor.visit(s, context);
connections.addConnections(dat.getElem2().getConnections());
mgroup.getModules().addAll(dat.getElem2().getModules());
if(dat.getElem1() != null)
mgroup.getModules().add(dat.getElem1());
}