/**
* @param string $filterName
* @param string $currency
*
* @Then /^I filter by price "([^"]*)" with empty value on "([^"]*)" currency$/
*/
public function iFilterByPriceWithEmptyValue($filterName, $currency)
{
$this->datagrid->filterPerPrice($filterName, 'is empty', null, $currency);
$this->wait();
}
