{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"rustc_ast::BoundPolarity::Negative(_)"}]}
            rustc_ast::BoundPolarity::Negative(_) => (ty::PredicatePolarity::Negative, bounds),
            rustc_ast::BoundPolarity::Positive => (ty::PredicatePolarity::Positive, bounds),
            rustc_ast::BoundPolarity::Maybe(_) => {