Method getParentEdge

src/figtree/treeviewer/ReRootedTree.java:261–266

(Node node)

    }

    public Edge getParentEdge(Node node) {
        if (!(node instanceof ReRootedNode)) {
            throw new IllegalArgumentException("Node, " + node.toString() + " is not an instance of SimpleRootedNode");
        }
        return ((ReRootedNode)node).getEdge();
    }

    /**
     * The root of the tree has the largest node height of