ListStrategy::getUfProvider

protected function getUfProvider(): DataProvider
{
	if (!$this->ufProvider)
	{
		$filterFactory = Container::getInstance()->getFilterFactory();
		$settings = $filterFactory->getSettings($this->getEntityTypeId(), $this->getGridId());

		$this->ufProvider = $filterFactory->getUserFieldDataProvider($settings);
	}

	return $this->ufProvider;
}