PEAR standard does not support inheritdoc

sorry, still had some uncommited changes in the phpcs 2 branch which fixed an issue where
```bash
phpcs --ignore=*/tests/* --standard=PEAR . -n
```
(as stated in the contributing section of the readme.md) returned several codestyle issues as the phpcs + pear standard does not support  ``{@inheritdoc}``

bit sloppy…