Airship\Cabin\Bridge\Landing\PageManager::pageHistoryDiff PHP Method

    public function pageHistoryDiff(string $cabin, string $leftUnique, string $rightUnique)
    {
        try {
            $left = $this->pg->getPageVersionByUniqueId($leftUnique);
            $right = $this->pg->getPageVersionByUniqueId($rightUnique);
            if ($left['page'] !== $right['page']) {
                throw new CustomPageNotFoundException(\__('Unique IDs for different pages.'));
            }
        } catch (CustomPageNotFoundException $ex) {
            $this->log('Page not found', LogLevel::NOTICE, ['exception' => \Airship\throwableToArray($ex)]);
            \Airship\redirect($this->airship_cabin_prefix . '/pages/' . \trim($cabin, '/'));
            return;
        }
        $this->setTemplateExtraData($cabin);
        $this->lens('pages/page_history_diff', ['left' => $left, 'right' => $right]);
    }