This should be implemented to handle changes in child cell properties for a given #GtkCellRenderer that were previously installed on the #GtkCellAreaClass with gtk.cell_area_class.CellAreaClass.installCellProperty.
This should be implemented to handle changes in child cell properties for a given #GtkCellRenderer that were previously installed on the #GtkCellAreaClass with gtk.cell_area_class.CellAreaClass.installCellProperty.