The following methods should be final since v4.0:

• run:
  

  symfony/src/Symfony/Component/Process/Process.php

  Lines 195 to 197 in ddb602b

  	* @final since version 3.3
  	*/
  	public function run(callable $callback = null, array $env = array()): int

• mustRun:
  

  symfony/src/Symfony/Component/Process/Process.php

  Lines 217 to 219 in ddb602b

  	* @final since version 3.3
  	*/
  	public function mustRun(callable $callback = null, array $env = array())

• restart:
  

  symfony/src/Symfony/Component/Process/Process.php

  Lines 336 to 338 in ddb602b

  	* @final since version 3.3
  	*/
  	public function restart(callable $callback = null, array $env = array())

But they are not. Is this wanted or it was something missed before the release of v4?

Upgrade ref: https://github.com/symfony/symfony/blob/3.4/UPGRADE-3.3.md#process