.. code-block:: diff

   --- Original
   +++ New
    <?php
    final class Sample
    {
   -    protected $a;
   +    private $a;

   -    protected function test()
   +    private function test()
        {
        }
    }

Rule sets
---------

The rule is part of the following rule sets:

- `@PhpCsFixer <./../../ruleSets/PhpCsFixer.rst>`_
- `@Symfony <./../../ruleSets/Symfony.rst>`_

References
----------

- Fixer class: `PhpCsFixer\\Fixer\\ClassNotation\\ProtectedToPrivateFixer <./../../../src/Fixer/ClassNotation/ProtectedToPrivateFixer.php>`_
- Test class: `PhpCsFixer\\Tests\\Fixer\\ClassNotation\\ProtectedToPrivateFixerTest <./../../../tests/Fixer/ClassNotation/ProtectedToPrivateFixerTest.php>`_

The test class defines officially supported behaviour. Each test case is a part of our backward compatibility promise.