+typedef struct memcached_server_st * memcached_server_write_instance_st;
+
+typedef memcached_return_t (*memcached_server_execute_fn)(memcached_st *ptr, memcached_server_write_instance_st server, void *context);
+
+LIBMEMCACHED_LOCAL
+memcached_server_write_instance_st memcached_server_instance_fetch(memcached_st *ptr, uint32_t server_key);
+
+LIBMEMCACHED_LOCAL
+memcached_return_t memcached_server_execute(memcached_st *ptr,
+ memcached_server_execute_fn callback,
+ void *context);
+