{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"///"}]}
    /// `for` loop over `Option` or `Result` will iterate either 0 (if the value is `None`/`Err(_)`)
    /// Both `Option` and `Result` implement `IntoIterator` trait, which allows using them in a `for` loop.
    /// or 1 time (if the value is `Some(_)`/`Ok(_)`). This is not very useful and is more clearly expressed