protected function processValue($value, $isRoot = false)
    {
        if (\is_array($value)) {
            foreach ($value as $k => $v) {
                if ($isRoot) {
                    $this->currentId = $k;
                }
                if ($v !== $processedValue = $this->processValue($v, $isRoot)) {
                    $value[$k] = $processedValue;
                }
            }
        } elseif ($value instanceof ArgumentInterface) {
            $value->setValues($this->processValue($value->getValues()));
        } elseif ($value instanceof Expression && $this->processExpressions) {
            $this->getExpressionLanguage()->compile((string) $value, ['this' => 'container']);
        } elseif ($value instanceof Definition) {
            $value->setArguments($this->processValue($value->getArguments()));
            $value->setProperties($this->processValue($value->getProperties()));
            $value->setMethodCalls($this->processValue($value->getMethodCalls()));

            $changes = $value->getChanges();
            if (isset($changes['factory'])) {
                $value->setFactory($this->processValue($value->getFactory()));
            }
            if (isset($changes['configurator'])) {
                $value->setConfigurator($this->processValue($value->getConfigurator()));
            }
        }

        return $value;
    }