{"ast_node_type":"other","tokens":[{"end":20,"kind":"keyword","start":0,"text":"#[subdiagnostic]"}]}
    #[subdiagnostic]
    pub(crate) sub_reachable_suggestion: Option<TryUsingSimilarlyNamedLabel>,
    pub(crate) sub_unreachable: Option<UnreachableLabelWithSimilarNameExists>,