stopEditing 
  ⚠️ Deprecated ⚠️
This is deprecated since version 4.10.
---Informs the cell renderer that the editing is stopped. If @canceled is true, the cell renderer will emit the GtkCellRenderer::editing-canceled signal.
This function should be called by cell renderer implementations in response to the GtkCellEditable::editing-done signal of GtkCellEditable.
Parameters
canceled
true if the editing has been canceled