Feature request: optional close icon for messages

What problem does this feature solve?

Real use case: a user creates a new API key, we generate a key, show it to him and redirect to the list of API keys. The key will be shown only once, so it’s not visible on any specific page where I could’ve used <Alert>. I set the duration to 0 because it will be shown only once. But once user copied/saved the key it can close the message. It would be great to have optional “X” icon like Alerts have.

What does the proposed API look like?

const closable = true;
message.info("Message", 0, closable);

[AryaBuddha]

Could you not just use a <Notification> instead? Has all the same features of a message and it’s closeable.

[csandanov]

I’m not sure so does it support the middle placement or not?