public VisualNode getOppositeNode(VisualNode node) {
if (targetNode == node) {
return sourceNode;
}
if (sourceNode == node) {
return targetNode;
}
throw new IllegalArgumentException(
"Node '"
+ node.getLabel()
+ "' is neither the source nor the target node of the edge '"
+ getLabel()
+ "'");
}
public String getLabel() {
return sourceNode.getLabel() + " --> " + targetNode.getLabel();
}
