/// <inheritdoc />
 public IEnumerable <ISilentRedisServer> GetAllServers(object asyncState = null)
 {
     try
     {
         var servers = _redisDatabaseProvider.GetAllServers(asyncState) ?? Enumerable.Empty <IRedisServer>();
         return(servers.Select(x => new SilentRedisServer(x)));
     }
     catch (Exception e)
     {
         Logger.LogErrorFormat(e, "Taking of all Redis servers has been failed.");
         return(Enumerable.Empty <ISilentRedisServer>());
     }
 }