private function removeDefaultBlocks($activeBlockTemplates, $templateBlocksToExchange)
    {
        $templateBlocks = [];
        foreach ($activeBlockTemplates as $activeBlockTemplate) {
            if (!in_array($this->prepareBlockKey($activeBlockTemplate), $templateBlocksToExchange['theme'])
                || $activeBlockTemplate['OXTHEME']
            ) {
                $templateBlocks[] = $activeBlockTemplate;
            }
        }

        return $templateBlocks;
    }