pub trait HasVtable<V>: Sized + HasVtables {
fn get(from: &WithVtables<Self>) -> &VtableRef<V>;
fn get_mut(from: &mut WithVtables<Self>) -> Pin<&mut VtableRef<V>>;
}
pub trait HasVtable<V>: Sized + HasVtables {
fn get(from: &WithVtables<Self>) -> &VtableRef<V>;
fn get_mut(from: &mut WithVtables<Self>) -> Pin<&mut VtableRef<V>>;
}