{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":".filter(|clause|"}]}
                    .filter(|clause| clause.polarity() == ty::PredicatePolarity::Positive)
                    .filter_map(|clause| clause.as_trait_clause())
                    .map(|clause| clause.map_bound(|clause| clause.trait_ref)),