public override void OnCloseDocument(PdfWriter writer, Document document)
    {
        var text = "derp a derp.";
        var len = _baseFont.GetWidthPoint(text, 10);

        // Write text
        _pdfContentByte.BeginText();
        _pdfContentByte.SetFontAndSize(_baseFont, 10);
        _pdfContentByte.SetTextMatrix(document.PageSize.GetRight(120), document.PageSize.GetBottom(30));
        _pdfContentByte.ShowText(text);
        _pdfContentByte.EndText();

        // Write line
        _pdfContentByte.MoveTo(40, document.PageSize.GetBottom(50));
        _pdfContentByte.LineTo(document.PageSize.Width - 40, document.PageSize.GetBottom(50));
        _pdfContentByte.SetLineDash(3f, 3f);
        _pdfContentByte.Stroke();
        _pdfContentByte.SetLineDash(0f);

        base.OnCloseDocument(writer, document);

    }