public function testBusinessIdentificationNumberIsValid()
{
$registrationDate = new \DateTime('now');
$businessIdentificationNumber = $this->faker->businessIdentificationNumber($registrationDate);
$registrationDateAsString = $registrationDate->format('ym');
$this->assertRegExp("/^(" . $registrationDateAsString . ")([4-6]{1})([0-3]{1})(\\d{6})\$/", $businessIdentificationNumber);
}