function declaration did not match

````
00:12:57.380 PHP Fatal error:  Declaration of SimpleUserForTesting::setPassword() must be compatible with OCP\IUser::setPassword($password, $recoveryPassword = NULL) in /var/lib/jenkins/jobs/pull-request-analyser/workspace/tests/lib/contacts/localadressbook.php on line 47
00:12:57.380 PHP Stack trace:
00:12:57.380 PHP   1. {main}() /usr/bin/phpunit:0
00:12:57.380 PHP   2. PHPUnit_TextUI_Command::main() /usr/bin/phpunit:46
00:12:57.380 PHP   3. PHPUnit_TextUI_Command->run() /usr/share/php/PHPUnit/TextUI/Command.php:129
00:12:57.380 PHP   4. PHPUnit_TextUI_Command->handleArguments() /usr/share/php/PHPUnit/TextUI/Command.php:138
00:12:57.380 PHP   5. PHPUnit_Util_Configuration->getTestSuiteConfiguration() /usr/share/php/PHPUnit/TextUI/Command.php:657
00:12:57.380 PHP   6. PHPUnit_Util_Configuration->getTestSuite() /usr/share/php/PHPUnit/Util/Configuration.php:789
00:12:57.380 PHP   7. PHPUnit_Framework_TestSuite->addTestFiles() /usr/share/php/PHPUnit/Util/Configuration.php:873
00:12:57.380 PHP   8. PHPUnit_Framework_TestSuite->addTestFile() /usr/share/php/PHPUnit/Framework/TestSuite.php:416
00:12:57.380 PHP   9. PHPUnit_Util_Fileloader::checkAndLoad() /usr/share/php/PHPUnit/Framework/TestSuite.php:355
00:12:57.380 PHP  10. PHPUnit_Util_Fileloader::load() /usr/share/php/PHPUnit/Util/Fileloader.php:76
00:12:57.380 PHP  11. include_once() /usr/share/php/PHPUnit/Util/Fileloader.php:92