code: private void createLEdges(List<Arc> arcs)
      {
          for(Arc arc: arcs )
          {
              LEdge lEdge = layout.newEdge(null);
              lEdge.type = arc.getClazz();
              lEdge.label = arc.getId();
              LNode sourceLNode = viewToLayout.get(glyphToVNode.get(arc.getSource()));
              LNode targetLNode = viewToLayout.get(glyphToVNode.get(arc.getTarget()));
              idToArcs.put(arc.getId(), arc);
  
              // Add edge to the layout
              layout.getGraphManager().add(lEdge, sourceLNode, targetLNode);
          }
      }
docs: Creates LNodes from Arcs of Sbgn and adds it to the passed layout object.
  
  @param arcs List of arc objects from which the LEdges will be constructed for ChiLay Layout component.