public static function assertEquals($expected, $actual, $message = '', $delta = 0, $maxDepth = 10, $canonicalize = FALSE, $ignoreCase = FALSE)
 {
     if ($expected instanceof \DateTime && $actual instanceof \DateTime) {
         $expected = $expected->format('c');
         $actual = $actual->format('c');
     }
     parent::assertEquals($expected, $actual, $message, $delta, $maxDepth, $canonicalize, $ignoreCase);
 }