pub trait RefTupleView<'a, DV: DatumValue<DV>>: TupleDatum + Debug {
// Required methods
fn get_val(&self, k: &BindingsName<'_>) -> Option<Cow<'a, DV>>;
fn tuple_fields_iter(
&'a self,
) -> Box<dyn Iterator<Item = RefFieldView<'a, DV>> + 'a>;
}