Complete InterfaceAdded InterfaceRemoved ProviderRemoved

void(* DOFSystemQueryCallback::ProviderRemoved)(DOFSystemQueryCallback self, DOFOperation operation, DOFObjectID objectID) Callback for Requestor when a Provider matching the query for the DOFOperation no longer provides any matching Interfaces. This can be used to identify when a DOFObject can safely be cleaned up and destroyed. This callback may be NULL to ignore notification of object removal. Parameters self The callback object. This will never be NULL. operation The Query Operation. This will never be NULL. objectID The Object ID being removed from the system. This will never be NULL.