public void On(DocumentDescriptorHasBeenDeduplicated e)
{
var originalDocumentDescriptor = _documentDescriptorReader.AllUnsorted.Single(d => d.Id == e.AggregateId);
_writer.DocumentDeDuplicated(
e.HandleInfo.Handle,
null,
(DocumentDescriptorId)e.AggregateId,
e.CheckpointToken
);
}