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protected function initFrontend() {
    $siteId = 1;
    $pageId = 1219;
    $typeNum = 0;
    if (!is_object($GLOBALS['TT'])) {
        $GLOBALS['TT'] = new \TYPO3\CMS\Core\TimeTracker\TimeTracker;
        $GLOBALS['TT']->start();
    }

    $context = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Context\Context::class);

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<?php
namespace SpeedPartner;

class ImageResizeCached extends \Gumlet\ImageResize
{
    protected $source_image_filename;
    
    private function loadSourceImage()
    {
        switch ($this->source_type) {