Summary:
Currently, the linter raises `XHP29` warnings for these files because they are not abstract or final.
I guess there are two possibly solutions, either making the classes final or marking them as `@concrete-extensible`. Given that there are no subclasses of these classes in the `phabricator`, `arcanist` and `libphutil` repositories... I opted to declare the classes as final.
Test Plan:
The following linter warnings are gone:
```
>>> Lint for src/aphront/configuration/AphrontDefaultApplicationConfiguration.php:
Warning (XHP29) Class Not abstract Or final
This class is neither 'final' nor 'abstract', and does not have a
docblock marking it '@concrete-extensible'.
3 /**
4 * @group aphront
5 */
>>> 6 class AphrontDefaultApplicationConfiguration
7 extends AphrontApplicationConfiguration {
8
9 public function __construct() {
>>> Lint for src/applications/differential/mail/DifferentialReplyHandler.php:
Warning (XHP29) Class Not abstract Or final
This class is neither 'final' nor 'abstract', and does not have a
docblock marking it '@concrete-extensible'.
1 <?php
2
>>> 3 class DifferentialReplyHandler extends PhabricatorMailReplyHandler {
4
5 private $receivedMail;
6
```
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley
CC: Korvin, epriestley, aran
Differential Revision: https://secure.phabricator.com/D8347
7f5b15c6fa