The STS ships with an implementation of the RequestCollectionOperation interface described above that can be used to perform batch processing. The TokenRequestCollectionOperation is essentially a wrapper for the other operations, and does no processing itself. It iterates through the request collection that was received, and checks that each request has the same RequestType. If not then an exception is thrown. It then dispatches each request to the appropriate operation. To support bulk processing for each individual operation, it is necessary to set the appropriate implementation for that operation on the TokenRequestCollectionOperation, otherwise an exception will be thrown.