// 4-Paged HTML Document example:
String html = "<p> Hello Iron</p>"
    + "<p> This is 1st Page </p>"
    + "<div style = 'page-break-after: always;' ></div>"
    + "<p> This is 2nd Page</p>"
    + "<div style = 'page-break-after: always;' ></div>"
    + "<p> This is 3rd Page</p>"
    + "<div style = 'page-break-after: always;' ></div>"
    + "<p> This is 4th Page</p>";

PdfDocument pdf = PdfDocument.renderHtmlAsPdf(html);

// Remove a pages 2 & 3.
pdf.removePages(PageSelection.pageRange(1,2));
pdf.saveAs("Page1And4.pdf");