FixedBackOff has a method maxAttempt() source, documented laconically as:

	/**
	 * Return the maximum number of attempts.
	 */

Meanwhile RetryPolicy and related Builder are using maxRetries, with a way more helpful documentation.

Due to the difference in naming, and the explicit use of the term total attempts in the later documentation, I was expecting maxAttempt to be related to total attempts. After some testing, it is in fact actually a max retries attempts

The use of maxRetries can be traced to #35772 and I think that FixedBackOff was forgotten in that renaming.
While this ship as sailed and it is too late to rename the FixBackOff.maxAttempt() method to maxRetries, the documentation can be improved.