getSpacing method
Implementation
num getSpacing(Graph graph, Node? leftNode, Node rightNode) {
var separation = configuration.getSubtreeSeparation();
if (isSibling(graph, leftNode, rightNode)) {
separation = configuration.getSiblingSeparation();
}
num length = isVertical() ? leftNode!.width : leftNode!.height;
return separation + length;
}