What does the boolean returned by ChannelWrapper.publish indicate

[manuschillerdev]

ChannelWrapper.publish resolves a boolean according to the TypeScript types:

const result = await amqpChannel.publish(
        process.env.AMQP_EXCHANGE,
        "my-qeue",
        myObject
);

What does result actually indicate?
I thought if the promise resolves, the message was published successfuly, if it rejects then there was an error.

I tried to find more information about that in the documentation, but did not find anything about it.