unlink the links

src/main.cpp

@@ -1,7 +1,9 @@
 #include "nodes/SimpleNode.h"
 #include <iostream>
 
-void printTree(const NodePtr& startNode, int indent = 0) {
+void printTree(const MixinPtr& start, int indent = 0) {
+	if (!start) return;
+	auto startNode = std::dynamic_pointer_cast<INode>(start);
 	if (!startNode) return;
 	for (int i = 0; i < indent; ++i) std::cout << "  ";
 	std::cout << startNode->name() << "\n";
@@ -47,6 +49,7 @@ int main() {
 			child1->unlinkParent();
 			std::cout << "\nTree after unlink:\n\n\n";
 			printTree(root);
+			std::cout << "\n\n";
 		}
 
 		std::cout << "\nTree after scope out:\n\n\n";