{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"[closures](https://doc.rust-lang.org/stable/book/ch13-01-closures.html)"}]}
            [closures](https://doc.rust-lang.org/stable/book/ch13-01-closures.html)
            [closure](https://doc.rust-lang.org/stable/book/ch13-01-closures.html)
            [threads](https://doc.rust-lang.org/stable/book/ch16-01-threads.html#using-move-closures-with-threads)