add hierarchical node

include/mixins/BaseLinkMixin.h

@@ -3,15 +3,16 @@
 #include <memory>
 
 #include "ifaces/ILinkMixin.h"
+#include "Logger.h"
 
 class BaseLinkMixin : public virtual ILinkMixin,
 		      public std::enable_shared_from_this<ILinkMixin> {
 public:
 	void linkChild(const MixinPtr& child) override {
+		getLink()->addChild(child);
+
 		LinkPtr childLink = child->getLink();
 		childLink->setParent(getNode());
-
-		getLink()->addChild(child);
 	}
 
 	void unlinkParent() override {
@@ -28,7 +29,7 @@ public:
 	}
 
 	~BaseLinkMixin() override {
-		std::cout << "--- Destructor called for: " << "BaseLinkMixin" << "\n";
+		Logger::get("Mixin").dbg("--- Destructor called for: BaseLinkMixin");
 	}
 
 protected: