* The “RemovePersistentRequest” message tells the node to remove a persistent
* request, cancelling it first (resulting in a {@link GetFailed} or
* {@link PutFailed} message), if necessary.
* The “RemovePersistentRequest” message tells the node to remove a persistent
* request, cancelling it first (resulting in a {@link GetFailed} or
* {@link PutFailed} message), if necessary.