Responsys.mergeListMembersRIID call

        Accepts:
            InteractObject list_
            RecordData record_data
            ListMergeRule merge_rule

        Returns a RecipientResult

def merge_list_members_RIID(self, list_, record_data, merge_rule):
        """ Responsys.mergeListMembersRIID call

        Accepts:
            InteractObject list_
            RecordData record_data
            ListMergeRule merge_rule

        Returns a RecipientResult
        """
        list_ = list_.get_soap_object(self.client)
        result = self.call('mergeListMembersRIID', list_, record_data, merge_rule)
        return RecipientResult(result.recipientResult)