private List<ISimpleNode> insertDummyNodes(IRegularNode node, ISimpleNode child) {
List<ISimpleNode> dummyNodes = new ArrayList<>();
node.removeChild(child);
child.removeParent(node);
int nodeLayer = node.getLayer();
ISimpleNode currentChild = child;
while (currentChild.getLayer() - 1 > nodeLayer) {
currentChild = createDummyEdge(currentChild);
dummyNodes.add(currentChild);
}
node.addChild(currentChild);
currentChild.addParent(node);
return dummyNodes;
}
