public <T> T await(Command<K, V, T> cmd, long timeout, TimeUnit unit) {
if (!cmd.await(timeout, unit)) {
cmd.cancel(true);
throw new RedisException("Command timed out");
}
CommandOutput<K, V, T> output = cmd.getOutput();
if (output.hasError()) throw new RedisException(output.getError());
return output.get();
}
