//==================
//Adding Smart Art
//==================

//Instantiate Presentation Class
Presentation pres = new Presentation();

//Get first slide
ISlide slide = pres.getSlides().get_Item(0);

//Add Smart Art Shape
ISmartArt smart = slide.getShapes().addSmartArt(0, 0, 400, 400, SmartArtLayoutType.BasicBlockList);

//Saving presentation
pres.save("data/AsposeSmartArt.pptx", SaveFormat.Pptx);

//=====================
//Accessing Smart Art
//=====================
//Get first slide
ISlide slide0 = pres.getSlides().get_Item(0);

//Traverse through every shape inside first slide
for(IShape shape : slide0.getShapes())
{
    //Check if shape is of SmartArt type
    if (shape instanceof ISmartArt)
    {
        //Typecast shape to SmartArtEx
        ISmartArt smartArt = (ISmartArt)shape;
    }
}