{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"Err(Determinacy::Determined)"}]}
            Err(Determinacy::Determined) => (self.dummy_ext(kind), Res::Err),
            Ok((None, res)) => (self.dummy_ext(kind), res),
            Err(Determinacy::Undetermined) => return Err(Indeterminate),