PhpOffice\PhpPresentation\Shape\Chart\Series::setMarker PHP Метод

    public function setMarker(Marker $marker)
    {
        $this->marker = $marker;
        return $this;
    }

 public function testMarker()
 {
     $object = new Series();
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Chart\\Series', $object->setMarker(new Marker()));
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Chart\\Marker', $object->getMarker());
 }