Neos\Eel\CompilingEvaluator::shutdownObject PHP Method

    public function shutdownObject()
    {
        if (count($this->newExpressions) > 0) {
            $changesToPersist = false;
            $codeToBeCached = $this->expressionCache->get('cachedExpressionClosures');
            /**
             * At this point a race condition could happen, that we try to prevent with an additional check.
             * So we compare the evaluated expressions during this request with the methods the cache has at
             * this point and only add methods that are not present. Only if we added anything we write the cache.
             */
            foreach ($this->newExpressions as $functionName => $newExpression) {
                if (strpos($codeToBeCached, $functionName) === false) {
                    $codeToBeCached .= 'if (!function_exists(\'' . $functionName . '\')) { ' . $newExpression . ' }' . chr(10);
                    $changesToPersist = true;
                }
            }
            if ($changesToPersist) {
                $this->expressionCache->set('cachedExpressionClosures', $codeToBeCached);
            }
        }
    }