int cgroup_bonding_is_empty(CGroupBonding *b);
int cgroup_bonding_is_empty_list(CGroupBonding *first);
-CGroupBonding *cgroup_bonding_find_list(CGroupBonding *first, const char *controller);
+CGroupBonding *cgroup_bonding_find_list(CGroupBonding *first, const char *controller) _pure_;
char *cgroup_bonding_to_string(CGroupBonding *b);