Neos\Flow\Reflection\ReflectionService::reflectPropertyTag PHP Method

    protected function reflectPropertyTag($className, PropertyReflection $property, $tagName, $tagValues)
    {
        if ($this->isTagIgnored($tagName)) {
            return null;
        }
        if ($tagName !== 'var' || !isset($tagValues[0])) {
            return $tagValues;
        }
        $propertyName = $property->getName();
        $propertyDeclaringClass = $property->getDeclaringClass();
        if ($propertyDeclaringClass->getName() !== $className && isset($this->classReflectionData[$propertyDeclaringClass->getName()][self::DATA_CLASS_PROPERTIES][$propertyName][self::DATA_PROPERTY_TAGS_VALUES][$tagName])) {
            $tagValues = $this->classReflectionData[$propertyDeclaringClass->getName()][self::DATA_CLASS_PROPERTIES][$propertyName][self::DATA_PROPERTY_TAGS_VALUES][$tagName];
        } else {
            $tagValues[0] = $this->expandType($propertyDeclaringClass, $tagValues[0]);
        }
        return $tagValues;
    }