False positive when on a final class protected method made into private

[cstamas]

If there is a method w/ protected access on a final class, making that method into private triggers source incompatibility.

While the change lessen accessibility of the method from the package (call it "api"), is this really breaking compatibility with client code?

[cstamas]

Also, having protected method on final class does not make much sense, but it happened.

As I reported:

• making it private is reported as breakage
• making it package protected (removing any modifier) is reported as breakage