{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"hir::ItemKind::TraitAlias(..)"}]}
        hir::ItemKind::TraitAlias(..) => (hir::Constness::NotConst, true, false, hir::Safety::Safe),
        }
        _ => span_bug!(item.span, "trait_def_of_item invoked on non-trait"),