public function setPagePriority($pagePriority)
	{
		if ($pagePriority < 0 || $pagePriority > 1) {
			throw new \UnexpectedValueException(sprintf('The valid range is from 0.0 to 1.0, [%s] received.', $pagePriority));
		}

		$this->pagePriority = $pagePriority;
	}