{"ast_node_type":"function","tokens":[{"end":86,"kind":"keyword","start":0,"text":"do_check(r#\"fn"}]}
        do_check(r#"fn foo<T>() where T: Copy +$0Display"#, &["Display", "+Display"]);
        do_check(r#"fn foo<T>() where T: Copy + $0Display + Sync"#, &["Display", "Display + "]);
    }