ApiGen\Parser\Reflection\ReflectionClass::getProperties PHP Method

    public function getProperties()
    {
        if ($this->properties === null) {
            $this->properties = $this->getOwnProperties();
            foreach ($this->reflection->getProperties($this->getVisibilityLevel()) as $property) {
                /** @var ReflectionElement $property */
                if (isset($this->properties[$property->getName()])) {
                    continue;
                }
                $apiProperty = $this->reflectionFactory->createFromReflection($property);
                if (!$this->isDocumented() || $apiProperty->isDocumented()) {
                    $this->properties[$property->getName()] = $apiProperty;
                }
            }
        }
        return $this->properties;
    }