pocketmine\command\ConsoleCommandSender::sendMessage PHP Method

    public function sendMessage($message)
    {
        if ($message instanceof TextContainer) {
            $message = $this->getServer()->getLanguage()->translate($message);
        } else {
            $message = $this->getServer()->getLanguage()->translateString($message);
        }
        foreach (explode("\n", trim($message)) as $line) {
            MainLogger::getLogger()->info($line);
        }
    }

 public function taskDone($res, $player)
 {
     if (($player = $this->owner->getServer()->getPlayer($player)) == null) {
         $player = new ConsoleCommandSender();
     }
     if (!is_array($res)) {
         $player->sendMessage($res);
         return;
     }
     $player->sendMessage($res[0]);
 }