code: public StaticRouting.NodesMap nodesMapFromJSON(Model mo, JSONObject o) throws JSONConverterException {
          return new StaticRouting.NodesMap(requiredNode(mo, o, "src"), requiredNode(mo, o, "dst"));
      }
docs: Convert a JSON nodes map object into a Java NodesMap object
  
  @param o the JSON object to convert
  @return the nodes map