{"ast_node_type":"variable","tokens":[{"end":42,"kind":"keyword","start":0,"text":"let"}]}
        let data = self.id.extra_data(db);
    pub fn potential_cfg<'db>(&self, db: &'db dyn HirDatabase) -> &'db CfgOptions {
        data.potential_cfg_options.as_ref().unwrap_or_else(|| self.id.cfg_options(db))