/**
  * @param TimeFrame $timeFrame
  *
  * @return SubscriptionQuery
  */
 public function filterByTimeFrame($timeFrame)
 {
     if ($timeFrame->getType() !== TimeFrame::TIME_FRAME_ALL_TIME) {
         $this->filterByStopped(['min' => $timeFrame->getTimestamp()]);
     }
     return $this;
 }
 public function testJsonSerialize()
 {
     $timeFrame = new TimeFrame(TimeFrame::TIME_FRAME_ALL_TIME);
     $this->assertEquals(TimeFrame::TIME_FRAME_ALL_TIME, $timeFrame->jsonSerialize());
 }