{"ast_node_type":"function","tokens":[{"end":84,"kind":"keyword","start":0,"text":"fn"}]}
    fn check_proc_macro(&self, hir_id: HirId, target: Target, kind: ProcMacroKind) {
    /// If this best effort goes wrong, it will just emit a worse error later (see #102923)
        if target != Target::Fn {