Add an example class and some demo code to the project.

src/example_class.cpp

@@ -0,0 +1,9 @@
+#include "example_class.h"
+
+void ExampleClass::_bind_methods() {
+	godot::ClassDB::bind_method(D_METHOD("print_type", "variant"), &ExampleClass::print_type);
+}
+
+void ExampleClass::print_type(const Variant &p_variant) const {
+	print_line(vformat("Type: %d", p_variant.get_type()));
+}

src/example_class.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "godot_cpp/classes/ref_counted.hpp"
+#include "godot_cpp/classes/wrapped.hpp"
+#include "godot_cpp/variant/variant.hpp"
+
+using namespace godot;
+
+class ExampleClass : public RefCounted {
+	GDCLASS(ExampleClass, RefCounted)
+
+protected:
+	static void _bind_methods();
+
+public:
+	ExampleClass() = default;
+	~ExampleClass() override = default;
+
+	void print_type(const Variant &p_variant) const;
+};

src/register_types.cpp

@@ -1,9 +1,12 @@
 #include "register_types.h"
+
 #include <gdextension_interface.h>
 #include <godot_cpp/core/class_db.hpp>
 #include <godot_cpp/core/defs.hpp>
 #include <godot_cpp/godot.hpp>
 
+#include "example_class.h"
+
 using namespace godot;
 
 void initialize_gdextension_types(ModuleInitializationLevel p_level)
@@ -11,7 +14,7 @@ void initialize_gdextension_types(ModuleInitializationLevel p_level)
 	if (p_level != MODULE_INITIALIZATION_LEVEL_SCENE) {
 		return;
 	}
-	//GDREGISTER_CLASS(YourClass);
+	GDREGISTER_CLASS(ExampleClass);
 }
 
 void uninitialize_gdextension_types(ModuleInitializationLevel p_level) {