Pinq\ITraversable::append PHP Метод

    public function append($values);

 /**
  * @dataProvider everything
  */
 public function testThatAppendWithEmptyReturnsSameAsTheOriginalButReindexedKeys(\Pinq\ITraversable $traversable, array $data)
 {
     $appendedWithTraversable = $traversable->append([]);
     $appendedWithArray = $traversable->append([]);
     $appendedWithIterator = $traversable->append(new \ArrayObject([]));
     $this->assertMatches($appendedWithTraversable, array_values($data));
     $this->assertMatches($appendedWithArray, array_values($data));
     $this->assertMatches($appendedWithIterator, array_values($data));
 }