'Add a cell to the table.'

def add_cell(self, row, col, *args, **kwargs):

    xy = (0, 0)
    cell = CustomCell(xy, visible_edges=self.edges, *args, **kwargs)
    cell.set_figure(self.figure)
    cell.set_transform(self.get_transform())
    cell.set_clip_on(False)
    self._cells[(row, col)] = cell
    self.stale = True
