The Default Collector is triggered by an OnCollect event. The sole purpose of this event is to trigger the collector policy for a given object type. Do not attempt to use the OnCollect event to create additional policies that execute before or after the Default Collector or any other collector policy. Doing this can cause handlers to fail. Only one policy should execute when an OnCollect event occurs, and that policy should be the collection policy for the object type on which the OnCollect event occurs.