code: public void setVerticalAlignment(int verticalAlignment) {
          if (table != null)
              table.setExtendLastRow(verticalAlignment == Element.ALIGN_TOP);
          this.verticalAlignment = verticalAlignment;
      }
docs: Sets the vertical alignment for the cell. It could be
  <CODE>Element.ALIGN_MIDDLE</CODE> for example.
  
  @param verticalAlignment The vertical alignment