{"ast_node_type":"variable","tokens":[{"end":50,"kind":"keyword","start":0,"text":"let"}]}
        let path = self.dir.path().join(rel_path);
    pub(crate) fn doc_id(&self, rel_path: &str) -> TextDocumentIdentifier {
        TextDocumentIdentifier { uri: Url::from_file_path(path).unwrap() }