How to change the orientation of a single paragraph or page using Open XML and C #?

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            using (WordprocessingDocument package = WordprocessingDocument.Create(filePath, WordprocessingDocumentType.Document))
            {
                package.AddMainDocumentPart();
                package.MainDocumentPart.Document = new Document();
                Body body = package.MainDocumentPart.Document.Body = new Body();

                Paragraph para1 = CreatePara1(); // Paragraph 1 Portrait

                Paragraph breakBefore = CreateBreakBefore(); // Break before next paragraph that would be landscape

                Paragraph para2 = CreatePara2(); // Paragraph 2 Landscape

                Paragraph breakAfter = CreateBreakAfter(); // Break after previous paragraph that was landscape

                Paragraph para3 = CreatePara3(); // Paragraph 3 Portrait again

                body.Append(para1);
                body.Append(breakBefore);
                body.Append(para2);
                body.Append(breakAfter);
                body.Append(para3);
            }

:

    private static Paragraph CreatePara1()
    {
        Paragraph para1 = new Paragraph();
        Run run1 = new Run(new Text("This is Paragraph one."));
        para1.Append(run1);
        return para1;
    }

    private static Paragraph CreateBreakBefore()
    {
        Paragraph paragraph2 = new Paragraph() { RsidParagraphAddition = "00BA2F0F", RsidParagraphProperties = "00BA2F0F", RsidRunAdditionDefault = "00BA2F0F" };

        ParagraphProperties paragraphProperties1 = new ParagraphProperties();

        SectionProperties sectionProperties1 = new SectionProperties() { RsidR = "00BA2F0F" };
        PageSize pageSize1 = new PageSize() { Width = (UInt32Value)12240U, Height = (UInt32Value)15840U };
        PageMargin pageMargin1 = new PageMargin() { Top = 1440, Right = (UInt32Value)1440U, Bottom = 1440, Left = (UInt32Value)1440U, Header = (UInt32Value)720U, Footer = (UInt32Value)720U, Gutter = (UInt32Value)0U };
        Columns columns1 = new Columns() { Space = "720" };
        DocGrid docGrid1 = new DocGrid() { LinePitch = 360 };

        sectionProperties1.Append(pageSize1);
        sectionProperties1.Append(pageMargin1);
        sectionProperties1.Append(columns1);
        sectionProperties1.Append(docGrid1);

        paragraphProperties1.Append(sectionProperties1);

        paragraph2.Append(paragraphProperties1);
        return paragraph2;
    }

    private static Paragraph CreatePara2()
    {
        Paragraph para2 = new Paragraph() { RsidParagraphAddition = "00BA2F0F", RsidParagraphProperties = "00BA2F0F", RsidRunAdditionDefault = "00BA2F0F" };
        BookmarkStart bookmarkStart1 = new BookmarkStart() { Name = "_GoBack", Id = "0" };

        Run run2 = new Run();
        LastRenderedPageBreak lastRenderedPageBreak1 = new LastRenderedPageBreak();
        Text text2 = new Text();
        text2.Text = "This is the paragraph two";

        run2.Append(lastRenderedPageBreak1);
        run2.Append(text2);

        para2.Append(bookmarkStart1);
        para2.Append(run2);
        BookmarkEnd bookmarkEnd1 = new BookmarkEnd() { Id = "0" };
        return para2;
    }

    private static Paragraph CreateBreakAfter()
    {
        Paragraph paragraph4 = new Paragraph() { RsidParagraphAddition = "00BA2F0F", RsidParagraphProperties = "00BA2F0F", RsidRunAdditionDefault = "00BA2F0F" };

        ParagraphProperties paragraphProperties2 = new ParagraphProperties();

        SectionProperties sectionProperties2 = new SectionProperties() { RsidR = "00BA2F0F", RsidSect = "00BA2F0F" };
        PageSize pageSize2 = new PageSize() { Width = (UInt32Value)15840U, Height = (UInt32Value)12240U, Orient = PageOrientationValues.Landscape };
        PageMargin pageMargin2 = new PageMargin() { Top = 1440, Right = (UInt32Value)1440U, Bottom = 1440, Left = (UInt32Value)1440U, Header = (UInt32Value)720U, Footer = (UInt32Value)720U, Gutter = (UInt32Value)0U };
        Columns columns2 = new Columns() { Space = "720" };
        DocGrid docGrid2 = new DocGrid() { LinePitch = 360 };

        sectionProperties2.Append(pageSize2);
        sectionProperties2.Append(pageMargin2);
        sectionProperties2.Append(columns2);
        sectionProperties2.Append(docGrid2);

        paragraphProperties2.Append(sectionProperties2);

        paragraph4.Append(paragraphProperties2);
        return paragraph4;
    }

    private static Paragraph CreatePara3()
    {
        Paragraph para3 = new Paragraph();
        Run run3 = new Run(new Text("This is Paragraph three."));
        para3.Append(run3);
        return para3;
    }