{"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"options.usage_with_format(|it|"}]}
                    options.usage_with_format(|it| {
                    // strings, even though in this case we expect exactly one string.
                        it.fold(format!("{e}\nUsage:"), |a, b| a + "\n" + &b)