Java set the intents and spacing for paragraph on the presentation slide

import com.spire.presentation.*;

public class IndentStyle {
    public static void main(String[] args)  throws Exception{
        //Load the sample document
        Presentation presentation = new Presentation();
        presentation.loadFromFile("Indent.pptx");

        //get the shapes
        IAutoShape shape = (IAutoShape) presentation.getSlides().get(0).getShapes().get(0);

        //set the indent, margin and space for the first paragraph
        shape.getTextFrame().getParagraphs().get(0).setIndent(20);
        shape.getTextFrame().getParagraphs().get(0).setLeftMargin(10);
        shape.getTextFrame().getParagraphs().get(0).setSpaceAfter(10);

        //set the indent, margin and space for the third paragraph
        shape.getTextFrame().getParagraphs().get(2).setIndent(-100);
        shape.getTextFrame().getParagraphs().get(2).setLeftMargin(40);
        shape.getTextFrame().getParagraphs().get(2).setSpaceBefore(0);
        shape.getTextFrame().getParagraphs().get(2).setSpaceAfter(0);

        //save the document to file
        String output = "output/result.pptx";
        presentation.saveToFile(output, FileFormat.PPTX_2010);
    }
}