private function getRow($row_number, array $row)
    {
        $message = '';
        foreach ($row as $cell_number => $player) {
            $withBackground = $this->drawCellBackground($row_number, $cell_number);
            $message .= ($withBackground ? "|<bg={$this->background_color}> " : '| ')
                        . $this->getPlayerChar($player, $withBackground)
                        . ($withBackground ? " </bg={$this->background_color}>" : ' ')
            ;
        }
        $message .= "|\n";
        $message .= $this->getLineSeparator();

        return $message;
    }