{"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"ty::Ref(_,"}]}
                ty::Ref(_, ty, _) | ty::RawPtr(ty, _) => {
                ty::Tuple(_) => Some(field.index().to_string()),
                    self.describe_field_from_ty(ty, field, variant_index, including_tuple_field)