{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"ast::SourceFile::parse(r#\"const"}]}
        ast::SourceFile::parse(r#"const _: &str = { #[attr] "Hello" };"#, parser::Edition::CURRENT);
    let parse =
    let lit = parse.tree().syntax().descendants().find_map(ast::Literal::cast).unwrap();