GridComponent::getRowsPagination

protected function getRowsPagination(): ?PageNavigation
{
	if (!isset($this->pagination))
	{
		$this->pagination = new PageNavigation('page');
		$this->pagination->setPageSizes(
			$this->getPageSizes()
		);
		$this->pagination->setRecordCount(
			$this->getTotalCount()
		);

		$this->initFromGrid($this->pagination);
		$this->pagination->initFromUri();
	}

	return $this->pagination;
}