[Vala] exposing the unref and ref member for gtypeinstance classes?

[Yu Feng <rainwoodman gmail com>]

Dear Jurg,

Is it possible to expose ref and unref member of gtypeinstance classes?

They will be useful with GHashTable.new_full

I am currently using a dirty workaround like this:

class A {
   public static extern void unref(void*);
}

HashTable<T, A>.new_full(..., ..., ...,A.unref);

Regards,

Yu