v8 create object without methods - c++

Question

I'm work on next version of v8-profiler and now I want to simplify it.
I see that my class (ProfileNode) don't needs hidden link to internal object (v8::CpuProfileNode), because my class don't uses internal object methods.
Can I delete getter methods and replace it like the example below?
Is it wrong realisation?
Is it hight memory usage?
Or it's OK?
(I'm novice in c++ and v8 library)
(Please ignore version uncompatibility - it's not a part of question)
This is a part of current profile_node.cc
Persistent<ObjectTemplate> ProfileNode::node_template_;
void ProfileNode::Initialize() {
Local<ObjectTemplate> tpl = NanNewLocal<ObjectTemplate>(ObjectTemplate::New());
NanAssignPersistent(ObjectTemplate, node_template_, tpl);
tpl->SetInternalFieldCount(1);
tpl->SetAccessor(String::New("functionName"), ProfileNode::GetFunctionName);
...
}
NAN_GETTER(ProfileNode::GetFunctionName) {
NanScope();
Local<Object> self = args.Holder();
void* ptr = NanGetInternalFieldPointer(self, 0);
Handle<String> fname = static_cast<CpuProfileNode*>(ptr)->GetFunctionName();
NanReturnValue(fname);
}
...
Handle<Value> ProfileNode::New(const CpuProfileNode* node) {
NanScope();
if (node_template_.IsEmpty()) {
ProfileNode::Initialize();
}
if(!node) {
return Undefined();
}
else {
Local<Object> obj = NanPersistentToLocal(node_template_)->NewInstance();
NanSetInternalFieldPointer(obj, 0, const_cast<CpuProfileNode*>(node));
return obj;
}
}
After refactoring
//ProfileNode::Initialize deleted
//ProfileNode::GetFunctionName deleted
Handle<Value> ProfileNode::New(const CpuProfileNode* node) {
NanScope();
if(!node) {
return NanUndefined();
}
else {
//Create new simplest object, instead of new instance of object template
Local<Object> obj = NanNew<Object>();
//Append the value to this object
obj->Set(String::New("functionName"), node->GetFunctionName());
//Delete internal link.
//NanSetInternalFieldPointer(obj, 0, const_cast<CpuProfileNode*>(node));
return obj;
}
}