def merge_list_members_RIID(self, list_, record_data, merge_rule):
list_ = list_.get_soap_object(self.client)<EOL>result = self.call('<STR_LIT>', list_, record_data, merge_rule)<EOL>return RecipientResult(result.recipientResult)<EOL>
Responsys.mergeListMembersRIID call

        Accepts:
            InteractObject list_
            RecordData record_data
            ListMergeRule merge_rule

        Returns a RecipientResult