PhpOffice\PhpPresentation\Shape\Chart\Axis::setMajorGridlines PHP Метод

    public function setMajorGridlines(Gridlines $majorGridlines)
    {
        $this->majorGridlines = $majorGridlines;
        return $this;
    }

 public function testGridLines()
 {
     $object = new Axis();
     $oMock = $this->getMock('PhpOffice\\PhpPresentation\\Shape\\Chart\\Gridlines');
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Chart\\Axis', $object->setMajorGridlines($oMock));
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Chart\\Gridlines', $object->getMajorGridlines());
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Chart\\Axis', $object->setMinorGridlines($oMock));
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Chart\\Gridlines', $object->getMinorGridlines());
 }