pub trait StorageManagerMethods<D: DomTypes> {
// Required methods
fn Persisted(&self, _comp: InRealm<'_>, _can_gc: CanGc) -> Rc<D::Promise>;
fn Persist(&self, _comp: InRealm<'_>, _can_gc: CanGc) -> Rc<D::Promise>;
fn Estimate(&self, _comp: InRealm<'_>, _can_gc: CanGc) -> Rc<D::Promise>;
}