{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"err.subdiagnostic(errors::SuggestConvertViaMethod"}]}
                err.subdiagnostic(errors::SuggestConvertViaMethod {
                let sugg = prefix_wrap(".as_ref()");
                    span: expr.span.shrink_to_hi(),