Rotate shapes on Word document in Java

import com.spire.doc.Document;
import com.spire.doc.DocumentObject;
import com.spire.doc.FileFormat;
import com.spire.doc.Section;
import com.spire.doc.documents.*;
import com.spire.doc.fields.ShapeObject;

public class RotateShape {
    public static void main(String[] args) throws Exception {

               //Load the Sample Word document.
                Document doc = new Document();
                doc.loadFromFile("InsertShapes.docx");

               //Get the first section
                Section sec = doc.getSections().get(0);

                //Traverse every paragraphs to get the shapes and rotate them
                 for ( Paragraph para: (Iterable) sec.getParagraphs()) {
                    for (DocumentObject obj : (Iterable) para.getChildObjects()) {

                      if (obj instanceof ShapeObject) {
                       ((ShapeObject) obj).setRotation(20);

                  }
             }
        }
                //Save to file
                doc.saveToFile("output/RotateShape.docx", FileFormat.Docx);

    }
}