WinPhone customizing of ViewCellRenderer - Example?

I have a FinancialCell which is a ViewCell. This cell has a number of labels in it.

I am trying, in WinPhone to add a disclosure indicater in a custom renderer, but can't find any examples on how to modify a ViewCellRenderer for WinPhone.

public class FinancialCellRenderer : ViewCellRenderer
{
    public override DataTemplate GetTemplate(Cell cell)
    {
        var template = base.GetTemplate(cell);
        ??????????? 
        return base.GetTemplate(cell);
    }