fn generate_default_protocol_slot(
cls: &Type,
method: &mut ImplItemFn,
slot: &SlotDef,
ctx: &Ctx,
) -> Result<MethodAndSlotDef>fn generate_default_protocol_slot(
cls: &Type,
method: &mut ImplItemFn,
slot: &SlotDef,
ctx: &Ctx,
) -> Result<MethodAndSlotDef>