{"ast_node_type":"variable","tokens":[{"end":57,"kind":"keyword","start":0,"text":"let"}]}
        let comment = "```rust,no_run\nlet z = 55;\n```";
    fn test_format_docs_handles_complex_code_block_attrs() {
        assert_eq!(format_docs_(comment), "```rust\nlet z = 55;\n```");