{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"code:"}]}
                code: lsp_server::ErrorCode::ServerCancelled as i32,
            .on_with_vfs_default::<lsp_request::DocumentDiagnosticRequest>(handlers::handle_document_diagnostics, empty_diagnostic_report, || lsp_server::ResponseError {
                message: "server cancelled the request".to_owned(),