PixelFb::getBusinessPixel

private function getBusinessPixel(): ?string
{
	$pixelStored = Manager::getOption('business_pixel');
	if ($pixelStored === null)
	{
		$pixelStored = $this->getBusinessPixelFromSeo();
		Manager::setOption('business_pixel', $pixelStored);
	}

	return $pixelStored;
}