Generates members' set by appending calculated members that are siblings of the members of the specified member set.
AddCalculatedMembers can be used to add calculated members to the member sets as generated by those functions. Only calculated members that are siblings of the members sets are appended.
Please note that MDX functions like Children and Members are ignoring calculated members.
Special Examples (errors, null, ...)
Find here the value of the XMLA properties when not specified otherwise.