public function testPresentationProperties()
{
$object = new PhpPresentation();
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\PresentationProperties', $object->getPresentationProperties());
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\PhpPresentation', $object->setPresentationProperties(new PresentationProperties()));
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\PresentationProperties', $object->getPresentationProperties());
}