{"ast_node_type":"function","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
        let lit: ast::Literal = super::ast_from_text(&format!("fn f() {{ let _ = {text}; }}"));
        assert_eq!(text.trim(), text);
        lit.syntax().first_child_or_token().unwrap().into_token().unwrap()