Выбрать дочерей ресурса по uri

[[pdoResources?
&returnIds='1'
&limit='0'
&where='{ "alias":"services"}'
&toPlaceholder='service_parent'
]]
[[pdoResources?
&parents='[[+service_parent]]'
&depth='1'
&tpl='@INLINE <li class="list-services-item"><a href="[[+uri]]">[[+pagetitle]]</a></li>'
&sortdir='ASC'
]]