{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"//"}]}
    // Can be replaced with `n.and_then(NonZero::new)` if that is ever usable
const fn to_nonzero(n: Option<u32>) -> Option<NonZero<u32>> {
    // in const context. Requires https://github.com/rust-lang/rfcs/pull/2632.