{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"if"}]}
        if cx.is_lang_item(trait_def_id, TraitSolverLangItem::Unsize) {
        // `trait Foo: Bar<A> + Bar<B>` and `dyn Foo: Unsize<dyn Bar<_>>`
            candidates.extend(G::consider_structural_builtin_unsize_candidates(self, goal));