pocketmine\command\RemoteConsoleCommandSender::sendMessage PHP Method

    public function sendMessage($message)
    {
        if ($message instanceof TextContainer) {
            $message = $this->getServer()->getLanguage()->translate($message);
        } else {
            $message = $this->getServer()->getLanguage()->translateString($message);
        }
        $this->messages .= trim($message, "\r\n") . "\n";
    }