PhpOffice\PhpPresentation\Writer\PowerPoint2007::getDiskCachingDirectory PHP Method

    public function getDiskCachingDirectory()
    {
        return $this->diskCachingDir;
    }

 /**
  * Test set/get disk caching
  */
 public function testSetGetUseDiskCaching()
 {
     $object = new PowerPoint2007(new PhpPresentation());
     $this->assertFalse($object->hasDiskCaching());
     $object->setUseDiskCaching(true, sys_get_temp_dir());
     $this->assertTrue($object->hasDiskCaching());
     $this->assertEquals(sys_get_temp_dir(), $object->getDiskCachingDirectory());
 }