ZCML File
configure.zcml

<configure
    xmlns="http://namespaces.zope.org/zope"
    >
<subscriber
    handler=".event.objectEventNotify"
    />
<subscriber
    handler=".registry.dispatchUtilityRegistrationEvent"
    />
<subscriber
    handler=".registry.dispatchAdapterRegistrationEvent"
    />
<subscriber
    handler=".registry.dispatchSubscriptionAdapterRegistrationEvent"
    />
<subscriber
    handler=".registry.dispatchHandlerRegistrationEvent"
    />
</configure>