public void SubscribeTargetToSourceChanges(CloudBlob subscriber)
{
if(subscriber.CanContainExternalMetadata() == false)
throw new InvalidDataException("Subscriber candidate cannot contain metadata: " + subscriber.Name);
foreach(var source in CollectionContent.Where(src => src.IsInformationObjectSource))
{
SubscribeSupport.AddSubscriptionToObject(source.SourceLocation, subscriber.Name,
SubscribeSupport.SubscribeType_WebPageToSource);
}
}