Wildcard in the URLFetch whitelist

Question

In the official docs is said

If your add-on functionality demands it, you can use a * character as wildcard in the whitelist.

I have tried multiple ways to define it with no luck. Could somebody show a simple example how it can be done?

Link to a problem I have related to this topic

Answer 1

You can't use wildcards.

You need a complete domain or don't use Whitelist at all (is not recommended).

This part of documentation explains:

Whitelisting URLs

The prefixes you add to the manifest must satisfy the following requirements:

Each prefix must have a full domain.