int send_searchRequest(Yaz_Z_Query *query, char* pResultSetId = NULL, char* pRefId = NULL);
int send_presentRequest(Odr_int start, Odr_int number, char* pResultSetId = NULL, char* pRefId = NULL);
int send_deleteResultSetRequest(char* pResultSetId = 0, char* pRefId = 0);
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/// Recv Services
virtual void recv_initRequest(Z_InitRequest *initRequest);
virtual void recv_initResponse(Z_InitResponse *initResponse);