+ return NULL;
+}
+
+int uc_get_rate_by_name(const char *name, gauge_t **ret_values,
+ size_t *ret_values_num) {
+ return ENOTSUP;
+}
+
+int uc_get_names(char ***ret_names, cdtime_t **ret_times, size_t *ret_number) {
+ return ENOTSUP;
+}
+
+int uc_get_value_by_name(const char *name, value_t **ret_values,
+ size_t *ret_values_num) {
+ return ENOTSUP;
+}
+
+int uc_meta_data_get_signed_int(const value_list_t *vl, const char *key,
+ int64_t *value) {
+ return -ENOENT;
+}
+
+int uc_meta_data_get_unsigned_int(const value_list_t *vl, const char *key,
+ uint64_t *value) {
+ return -ENOENT;