Linted a test file.
**Before**
```
Error (XHP31) Use Of PHP 5.3 Features
This codebase targets PHP 5.2.3, but `iterator` was not introduced until
PHP 5.3.0.
1 <?php
2
>>> 3 final class FooBar implements Iterator {}
```
**After**
```
Error (XHP31) Use Of PHP 5.3 Features
This codebase targets PHP 5.2.3, but `Iterator` was not introduced until
PHP 5.3.0.
1 <?php
2
>>> 3 final class FooBar implements Iterator {}
```