Method iterator

napi-inl.h:1943–1947

}

inline Object::iterator::iterator(Object* object, const Type type) {
  _object = object;
  _keys = object->GetPropertyNames();
  _index = type == Type::BEGIN ? 0 : _keys.Length();
}

inline Object::iterator Napi::Object::begin() {
  iterator it(this, Object::iterator::Type::BEGIN);