protected methods/properties false positive

[mariuswilms]

Some protected methods from core PHP class can only be overridden or reimplemented without using a leading underscore. This must be an exception.

[bayleedev]

How would you know unless you made an exception for each one?

If a method is protected, when overwriting it you can make it public.

[mariuswilms]

A possible solution would be to inspect the parent/s method/property and check if already has been protected. The failing test here is with template/TemplateException overriding the $code property from:
http://php.net/manual/de/class.exception.php