ndr_outer_poke_sizing
int ndr_outer_poke_sizing(ndr_ref_t *, unsigned, unsigned long *);
rc = ndr_outer_poke_sizing(outer_ref, 0, &size_is);
rc = ndr_outer_poke_sizing(outer_ref, 0, &size_is);
if (!ndr_outer_poke_sizing(outer_ref, 0, &size_is) ||
!ndr_outer_poke_sizing(outer_ref, 4, &first_is) ||
!ndr_outer_poke_sizing(outer_ref, 8, &length_is))
rc = ndr_outer_poke_sizing(outer_ref, 0, &size_is);