Extra page added while creating sections in word using docx4j

I am trying to create a word document and split into different sections so that I can apply different headers and orientation to different sections. I was able to create sections but an extra section with no content is getting created at the end of the document. How can I remove this? These are my different sections.

section 1

section 2

last section

In the last section, there is an extra page after the section break which I am trying to remove.

This is the code I used for creating sections

        ObjectFactory factory = Context.getWmlObjectFactory();
        P sectionParagraph = factory.createP();
        wordprocessingMLPackage.getMainDocumentPart().getJaxbElement().getBody().getContent().add(sectionParagraph);

        // Create the section properties (SectPr) for the new section
        SectPr sectPr = factory.createSectPr();
        SectPr.Type sectPrType = factory.createSectPrType();
        sectPrType.setVal("nextPage");

        sectPr.setType(sectPrType);

        SectPr.PgSz pageSz = factory.createSectPrPgSz();
        pageSz.setOrient(STPageOrientation.PORTRAIT);
        sectPr.setPgSz(pageSz);

        // Attach the section properties to the paragraph
        sectionParagraph.setPPr(factory.createPPr());
        sectionParagraph.getPPr().setSectPr(sectPr);

I added this code to places where the different sections are supposed to end.

I was able to solve this by attaching the sectPr of the last section to the document instead of a paragraph.

    SectPr sectPr = factory.createSectPr();
    SectPr.Type sectPrType = factory.createSectPrType();
    sectPrType.setVal("nextPage");

    sectPr.setType(sectPrType);

    wordprocessingMLPackage.getMainDocumentPart().getJaxbElement().getBody().setSectPr(sectPr);