Optionalconfirm?: booleanWait for broker confirmation. Defaults to true.
OptionalcontentType?: TOptionalmandatory?: booleanAsk the broker to return the message if it can't be routed to a queue.
Returned messages are delivered to the session-level onreturn handler
when one is configured; otherwise the default channel handler just
logs them. Defaults to false.
Options for AMQPQueue#publish.