copy() публичный Метод

Copy presentation (!= clone!)
public copy ( ) : PhpPresentation
Результат PhpPresentation
 /**
  * Test copy presentation
  */
 public function testCopy()
 {
     $object = new PhpPresentation();
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\PhpPresentation', $object->copy());
 }