Event handler for delete child component in AEM/CQ

问题

How can I add an event handler for my Adobe AEM6 component that triggers when a child component is deleted?

There are several listeners that I can attach event handlers to, listed in the documentation for cq:listeners but unfortunately there isn't one for afterchilddelete.

I've tried adding a cq:childEditConfig node to the component but, at least in AEM6, the handler doesn't fire:

<jcr:root xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
    jcr:primaryType="cq:EditConfig">
    <cq:listeners
        jcr:primaryType="cq:EditListenersConfig"
        afterdelete="mynamespace.afterchilddelete"/>
</jcr:root>

来源：https://stackoverflow.com/questions/25079427/event-handler-for-delete-child-component-in-aem-cq