Test property to be added to AssertionError texts

[atatarn]

For infrastructure tests it is nice to have a link to the infrastructure documentation e.g. "how to fix this failure" in AssertionError message.
But to properly implement this all the assertion messages must be updated with relevant urls. And the next time an engineer will change the test logic and/or assertion message - url will be gone.

Is it possible to somehow assign a text property with an url to the test function / test class and then have some hook which will take assertion message from the test and append the property to it if the property exists?