-bool memcached_purge(org::libmemcached::Instance*);
-org::libmemcached::Instance* memcached_instance_by_position(const memcached_st *ptr, uint32_t server_key);
+bool memcached_purge(memcached_instance_st*);
+memcached_instance_st* memcached_instance_by_position(const memcached_st *ptr, uint32_t server_key);