private void removeListeners(VNode flowNode) {
flowNode.titleProperty().removeListener(modelTitleListener);
flowNode.xProperty().removeListener(modelXListener);
flowNode.yProperty().removeListener(modelYListener);
flowNode.widthProperty().removeListener(modelWidthListener);
flowNode.heightProperty().removeListener(modelHeightListener);
node.layoutXProperty().removeListener(nodeXListener);
node.layoutYProperty().removeListener(nodeXListener);
node.prefWidthProperty().removeListener(nodeWidthListener);
node.prefHeightProperty().removeListener(nodeHeightListener);
}