title: setRowspan in iText not working
body: <p>I'm using iText 5.4.4 to generate pdf. I have created a table and the first row (which is a heading) has a column span of 4 columns. After that I tried using <code>cell.setRowspan(2)</code> to make the heading span 2 rows but that doesn't seem to be working.</p>
  
  <p>Here is my code snippet: </p>
  
  <pre><code>PdfPCell cell;
  cell = new PdfPCell(new Paragraph("Parent Details",font));
  cell.setColspan(4);
  cell.setRowspan(2);
  cell.setHorizontalAlignment(Phrase.ALIGN_CENTER);
  cell.setBackgroundColor(BaseColor.LIGHT_GRAY);
  table.addCell(cell);
  </code></pre>
  
  <p>In <code>iText in Action</code> book the author says - "There is no method setRowspan() in PdfPTable/PdfPCell." How come NetBeans is not throwing error if such a method does not exists? Also, how do I make my heading span 2 rows? Is there any workaround other than using a nested table? </p>