{"ast_node_type":"function","tokens":[{"end":80,"kind":"keyword","start":0,"text":"r#\"fn"}]}
            r#"fn f() { let a = 1; let b = 0.0; let c: (i32, f64) = (a, b); }"#,
fn f() { let a = 1; let b = 0.0; let c: (i32, f64) = todo$0!(); }"#,
        )