/**
  * Assertion helper
  *
  * @param  var[] $expected
  * @param  util.data.Sequence $sequence
  * @param  string $message
  * @throws unittest.AssertionFailedError
  */
 protected function assertSequence($expected, $sequence, $message = '!=')
 {
     $this->assertEquals($expected, $sequence->toArray(), $message);
 }