syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"assert!(cx.evaluation_is_concurrent());"}]}
source_snippet:                 assert!(cx.evaluation_is_concurrent());
context_before:             if let Some(prev) = &prev {
context_after:                 assert_eq!(cx.get_tracked(&prev.result), evaluation_result.result);