DeliveredMessage might not have delivery_tag

[astrojuanlu]

Getting this typing error on my callback that got passed to basic_consume:

error: Item "GetEmpty" of "Union[Deliver, GetEmpty, GetOk]" has no attribute "delivery_tag"  [union-attr]
                await message.channel.basic_ack(message.delivery.delivery_tag)
                                                ^

where message is of type aiormq.types.DeliveredMessage, defined here:

aiormq/aiormq/types.py

Lines 12 to 20 in dde0ce8

	DeliveredMessage = typing.NamedTuple(
	"DeliveredMessage",
	[
	("delivery", typing.Union[Basic.Deliver, GetResultType]),
	("header", ContentHeader),
	("body", bytes),
	("channel", "aiormq.Channel"),
	],
	)

[astrojuanlu]

The problem did not appear with aiormq-3.3.1 pamqp-2.3.0, but it appears with latest aiormq and pamqp.