[ HasEmitter ]
public signal void editing_done ()
This signal is a sign for the cell renderer to update its value from the cell_editable.
Implementations of `GtkCellEditable` are responsible for emitting this signal when they are done editing, e.g. `GtkEntry` emits this
signal when the user presses Enter. Typical things to do in a handler for editing_done are to capture the
edited value, disconnect the cell_editable from signals on the `GtkCellRenderer`, etc.
gtk_cell_editable_editing_done is a convenience method for emitting `GtkCellEditable:GtkCellEditable:editing-done
`.