struct AttributeAccessorFunctions {
  bool (*exists)(const void *data, StringRef name);
  GVArray try_get(const void *data, StringRef name);
  void try_create(void *data, StringRef name);
};

class AttributesAccessor {
 protected:
  void *data_;
  const AttributeAccessorFunctions *accessors_;

 public:
  bool exists(const StringRef name) const
  {
    return accessors_->exists(data_, name);
  }

  GVArray try_get(const StringRef name) const
  {
    return accessors_->try_get(data_, name);
  }
};

class MutableAttributes : public Attributes {
 public:
  void try_create(const StringRef name)
  {
    accessors_->try_create(name);
  }
};

void test(const Mesh *mesh)
{
  GVArray attribute = curves.attributes().get("test");
  Attributes mesh_attributes = bke::mesh_attributes(*mesh);
  MutableAttributes mutable_attributes = bke::mesh_attributes_for_write(*mesh);
}