Recurr\Rule::setUntil PHP Метод

    public function setUntil(\DateTime $until)
    {
        $this->until = $until;
        $this->count = null;
        return $this;
    }

 public function testGetStringWithUTC()
 {
     $this->rule->setFreq('DAILY');
     $this->rule->setInterval(1);
     $this->rule->setUntil(new \DateTime('2015-07-10 04:00:00', new \DateTimeZone('America/New_York')));
     $this->assertNotEquals('FREQ=DAILY;UNTIL=20150710T040000Z;INTERVAL=1', $this->rule->getString());
     $this->assertEquals('FREQ=DAILY;UNTIL=20150710T080000Z;INTERVAL=1', $this->rule->getString(Rule::TZ_FIXED));
 }