Inheritance: implements PhpOffice\PhpPresentation\Reader\ReaderInterface
 public function testLoadFile04()
 {
     $file = PHPPRESENTATION_TESTS_BASE_DIR . '/resources/files/Sample_00_04.ppt';
     $object = new PowerPoint97();
     $oPhpPresentation = $object->load($file);
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\PhpPresentation', $oPhpPresentation);
     $this->assertEquals(1, $oPhpPresentation->getSlideCount());
     $oSlide = $oPhpPresentation->getSlide(0);
     $this->assertCount(4, $oSlide->getShapeCollection());
 }