{"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"//"}]}
            // need to add whitespace either.
            // When `next` is a `Punct` of `'`, that's a part of a lifetime identifier so we don't
            if curr.spacing == tt::Spacing::Alone && curr.char != ';' && next.char != '\'' {