// [Read its documentation here.](https://doc.rust-lang.org/stable/std/option/enum.Option.html#method.map)
// Which functions in previous parts can you rewrite to use `map` instead?
// (Hint: read the source code of `map`, and see if the pattern appears in your own code.)
-// (Bonus: [`test_invariant` in Part 05](part05.html#section-6) doesn't use `match`,
-// but can you still find a way to rewrite it with `map`?)
+// Bonus: [`test_invariant` in Part 05](part05.html#section-6) doesn't use `match`,
+// but can you still find a way to rewrite it with `map`?
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