restkit - setWillMapDeserializedResponseBlock and RKPaginator -

restkit - setWillMapDeserializedResponseBlock and RKPaginator -

i seek setwillmapdeserializedresponseblock rkpaginator object next code:

[[self.paginator objectrequestoperation] setwillmapdeserializedresponseblock:^id(id deserializedresponsebody) { homecoming deserializedresponsebody; }];

but objectrequestoperation nil. can help me define willmapdeserializedresponseblock: rkpaginator ?

thank

restkit