{"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"//"}]}
                    // A little sanity-check
                MonoItem::Fn(Instance { def: InstanceKind::DropGlue(_, Some(ty)), args }) => {
                    assert_eq!(args.non_erasable_generics().next(), Some(GenericArgKind::Type(ty)));