Gets the list of subscriber's members.
            Subscriber member has SubscriberID=0.
            
Namespace: CMS.NewslettersAssembly: CMS.Newsletters (in CMS.Newsletters.dll) Version: 8.0.0.0 (8.1.5347.20411)
Parameters
- subscriber
 - Type: CMS.Newsletters SubscriberInfo
Subscriber definition 
- topN (Optional)
 - Type: 
System Int32
Number of members that should be returned (all are returned if 0) 
- lastMemberID (Optional)
 - Type: 
System Int32
Last member ID (used for subscribed role or contact group) 
- newsletterID (Optional)
 - Type: 
System Int32
Newsletter ID - it allows to filter-out unsubscribed contact group members 
Return Value
Type:See Also