} else {
						nt.addNode(logger, test.nodesToAdd[addIndex])
						addIndex++
					}
				case "remove":
					if removeIndex >= len(test.nodesToRemove) {
						t.Error("more remove operations than nodesToRemove")
					} else {
						nt.removeNode(logger, test.nodesToRemove[removeIndex])
						removeIndex++
					}
				default:
					t.Errorf("unknown operation: %v", op)
				}
			}
			output, err := nt.list()

        if (node == null) {
            return;
        }

        List<ModelNodeInternal> nodesToRemove = new ArrayList<>();
        ensureCanRemove(node, nodesToRemove);
        Collections.reverse(nodesToRemove);

        for (ModelNodeInternal nodeToRemove : nodesToRemove) {
            modelGraph.remove(nodeToRemove);
            ruleBindings.remove(nodeToRemove);