Gets whether the model is set to automatically expand new rows that get added.
This can be either rows added by changes to the underlying models or via [method@Gtk.TreeListRow.set_expanded].
%TRUE if the model is set to autoexpand
See Implementation
Gets whether the model is set to automatically expand new rows that get added.
This can be either rows added by changes to the underlying models or via [method@Gtk.TreeListRow.set_expanded].