+ Compile and link with -lmemcached
+
+.. type:: memcached_return_t (*memcached_dump_fn)(memcached_st *ptr, const char *key, size_t key_length, void *context)
+
+ :param ptr: pointer to `memcached_st` object
+ :param key: key string being dumped
+ :param key_length: length of the key without any terminating zero
+ :param context: pointer to the user supplied context
+ :returns: `memcached_return_t` indicating success