+memcached_return memcached_mdelete(memcached_st *ptr,
+ char **key, size_t *key_length,
+ unsigned int number_of_keys,
+ time_t expiration);
+
+memcached_return memcached_mdelete_by_key(memcached_st *ptr,
+ char *master_key, size_t master_key_length,
+ char **key, size_t *key_length,
+ unsigned int number_of_keys,
+ time_t expiration);
+
+memcached_return memcached_fetch_execute(memcached_st *ptr,
+ unsigned int (*callback[])(memcached_st *ptr, memcached_result_st *result, void *context),
+ void *context,
+ unsigned int number_of_callbacks
+ );
+