131             WasmHeapTopType::Extern => Val::ExternRef(None),  in null_top()
340                     HeapType::Extern => ExternRef::_from_raw(store, raw.get_externref()).into(),  in _from_raw()
342                     HeapType::NoExtern => Ref::Extern(None),  in _from_raw()
388             Val::ExternRef(e) => Some(Ref::Extern(e)),  in ref_()
578             Ref::Extern(e) => Val::ExternRef(e),  in from()
757     Extern(Option<Rooted<ExternRef>>),  enumerator
795         Ref::Extern(Some(e))  in from()
802         Ref::Extern(e)  in from()
868             HeapType::Extern => Ref::Extern(None),  in null()
879             Ref::Any(None) | Ref::Extern(None) | Ref::Func(None) | Ref::Exn(None) => true,  in is_null()
880             Ref::Any(Some(_)) | Ref::Extern(Some(_)) | Ref::Func(Some(_)) | Ref::Exn(Some(_)) => {  in is_null()
895         matches!(self, Ref::Extern(_))  in is_extern()
909             Ref::Extern(e) => Some(e.as_ref()),  in as_extern()
1047                 Ref::Extern(None) => HeapType::NoExtern,  in load_ty()
1048                 Ref::Extern(Some(_)) => HeapType::Extern,  in load_ty()
1080             (Ref::Extern(_), HeapType::Extern) => true,  in _matches_ty()
1081             (Ref::Extern(None), HeapType::NoExtern) => true,  in _matches_ty()
1082             (Ref::Extern(_), _) => false,  in _matches_ty()
1142             Ref::Extern(Some(x)) => x.comes_from_same_store(store),  in comes_from_same_store()
1143             Ref::Extern(None) => true,  in comes_from_same_store()