{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"span_err(value.span().unwrap(),"}]}
                        span_err(value.span().unwrap(), "invalid suggestion style")
                    let value = value.value().parse().unwrap_or_else(|()| {
                            .help("valid styles are `normal`, `short`, `hidden`, `verbose` and `tool-only`")