public Task <Tuple <string, string> > BLPopAsync(int timeout, params string[] keys)
{
if (keys == null)
{
throw new ArgumentNullException(nameof(keys));
}
if (keys != null && keys.Length == 0)
{
throw new ArgumentNullException(nameof(keys));
}
return(_pool.BLPopAsync(timeout, keys.AddPrefix(_instance).ToArray()));
}