fn impl_complex_enum_tuple_variant_len(
ctx: &Ctx,
variant_cls_type: &Type,
num_fields: usize,
) -> Result<(MethodAndSlotDef, ImplItemFn)>
fn impl_complex_enum_tuple_variant_len(
ctx: &Ctx,
variant_cls_type: &Type,
num_fields: usize,
) -> Result<(MethodAndSlotDef, ImplItemFn)>