{"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"if"}]}
        if result.predicates.is_empty() {
            inferred_outlives.iter().map(|(clause, span)| ((*clause).upcast(tcx), *span));
            result.predicates = tcx.arena.alloc_from_iter(inferred_outlives_iter);