{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"smallvec![tokenstream::TokenTree::Delimited("}]}
                smallvec![tokenstream::TokenTree::Delimited(
            TokenTree::Group(Group { delimiter, stream, span: DelimSpan { open, close, .. } }) => {
                    tokenstream::DelimSpan { open, close },