int hashmap_remove_and_put(Hashmap *h, const void *old_key, const void *new_key, void *value);
int hashmap_remove_and_replace(Hashmap *h, const void *old_key, const void *new_key, void *value);
int hashmap_remove_and_put(Hashmap *h, const void *old_key, const void *new_key, void *value);
int hashmap_remove_and_replace(Hashmap *h, const void *old_key, const void *new_key, void *value);