.apply = [](const client_options &opt, const extended_option &ext, memcached_st *memc) {
if (auto username = ext.arg) {
#if !LIBMEMCACHED_WITH_SASL_SUPPORT
.apply = [](const client_options &opt, const extended_option &ext, memcached_st *memc) {
if (auto username = ext.arg) {
#if !LIBMEMCACHED_WITH_SASL_SUPPORT