PDF table cell text - how to manipulate?

Hello,

How do you check the cell text of a pdf table?  There is no text property of the cell.

foreach (Row r in table.Rows)
            {
                var text = r.Cells[1].?????;
            }

I'm guessing you have to use text fragments, but I still have no idea to reference the specific text fragment within the given paragraph.

foreach (Row r in table.Rows)
            {
                var text = r.Cells[1].Paragraphs[1].??????
            {

Any help would be greatly appreciated.  The documentation I was looking at for PDF tables doesn't really explain this.  I looked at manipulating text within the PDF doc, but it doesn't clearly identify anything within a table cell.  At least, I could not find it.

Thank you!