{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"impl_items:"}]}
    impl_items: SmallVec<[P<ast::AssocItem>; 1]>,
    items: SmallVec<[P<ast::Item>; 1]>,
    trait_items: SmallVec<[P<ast::AssocItem>; 1]>,