cl_rv citrusleaf_batch_read(cl_cluster *asc, char *ns, const cf_digest *digests, int n_digests, cl_bin *bins, int n_bins, bool get_bin_data, citrusleaf_get_many_cb cb, void *udata)
int(* citrusleaf_get_many_cb)(char *ns, cf_digest *keyd, char *set, int result, uint32_t generation, uint32_t ttl, cl_bin *bins, uint16_t n_bins, void *udata)