DataLoader::getProductFields

protected function getProductFields()
	{
		if ($this->productFields === null)
		{
			$result = [];
			if ($this->catalogIncluded)
			{
				$result = CatalogProductTable::getEntity()->getScalarFields();
				unset($result['ID']);
				$result = array_fill_keys(array_keys($result), true);
			}
			$this->productFields = $result;
			unset($result);
		}
		return $this->productFields;
	}