RedisClient debugSegfault(Handler<AsyncResult<String>> handler);
@Fluent
RedisClient decr(String key, Handler<AsyncResult<Long>> handler);
@Fluent
RedisClient decrby(String key, long decrement, Handler<AsyncResult<Long>> handler);
<BUG>@Fluent
RedisClient del(List<String> keys, Handler<AsyncResult<Long>> handler);
</BUG>
@Fluent
RedisClient discard(Handler<AsyncResult<String>> handler);

RedisClient debugSegfault(Handler<AsyncResult<String>> handler);
@Fluent
RedisClient decr(String key, Handler<AsyncResult<Long>> handler);
@Fluent
RedisClient decrby(String key, long decrement, Handler<AsyncResult<Long>> handler);
@Fluent
RedisClient del(String key, Handler<AsyncResult<Long>> handler);
@Fluent
RedisClient delMany(List<String> keys, Handler<AsyncResult<Long>> handler);
@Fluent
RedisClient discard(Handler<AsyncResult<String>> handler);
