public void initEdge(){
            for(Node n : this.getNodes()){
                int x = Integer.parseInt(n.name.split(":")[0]);
                int y = Integer.parseInt(n.name.split(":")[1]);
                if(n.name.split(":")[2].equals("void")){
                    Node otherNode = this.getNode(x-1 + " : " + y );
                    if(otherNode != null){
                        if(!otherNode.name.equals("wall")){
                        
                        }
                    }
                }
            }
        }