{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"err.subdiagnostic(errors::SuggestConvertViaMethod"}]}
                    err.subdiagnostic(errors::SuggestConvertViaMethod {
                    let sugg = prefix_wrap(".as_deref()");
                        span: expr.span.shrink_to_hi(),