pub trait SelectionModelImplExt: ObjectSubclass {
// Required methods
fn parent_selection_in_range(&self, position: u32, n_items: u32) -> Bitset;
fn parent_is_selected(&self, position: u32) -> bool;
fn parent_select_all(&self) -> bool;
fn parent_select_item(&self, position: u32, unselect_rest: bool) -> bool;
fn parent_select_range(
&self,
position: u32,
n_items: u32,
unselect_rest: bool
) -> bool;
fn parent_set_selection(&self, selected: &Bitset, mask: &Bitset) -> bool;
fn parent_unselect_all(&self) -> bool;
fn parent_unselect_item(&self, position: u32) -> bool;
fn parent_unselect_range(&self, position: u32, n_items: u32) -> bool;
}