This function should be used to set up the initial sorting.
At runtime, users can change the sorting of a column view
by clicking on the list headers.
This call only has an effect if the sorter returned by
[method@Gtk.ColumnView.get_sorter] is set on a sort model,
and [method@Gtk.ColumnViewColumn.set_sorter] has been called
on @column to associate a sorter with the column.
Sets the sorting of the view.
This function should be used to set up the initial sorting. At runtime, users can change the sorting of a column view by clicking on the list headers.
This call only has an effect if the sorter returned by [method@Gtk.ColumnView.get_sorter] is set on a sort model, and [method@Gtk.ColumnViewColumn.set_sorter] has been called on @column to associate a sorter with the column.
If @column is %NULL, the view will be unsorted.