{"ast_node_type":"variable","tokens":[{"end":57,"kind":"keyword","start":0,"text":"let"}]}
        let InFile { file_id, value } = self.ast_ptr(db);
    fn source(&self, db: &dyn DefDatabase) -> InFile<Self::Value> {
        InFile::new(file_id, value.to_node(&db.parse_or_expand(file_id)))