avoid a PHPUnit message when no legacy tests are in the test suite
avoid a PHPUnit message when no legacy tests are in the test suite

derickr/Twig,Rvanlaak/Twig,gamernetwork/Twig,fsw/Twig,iKwinto/Twig,hhamon/Twig,apishka/templater,huang53798584/Twig,gamernetwork/Twig,dkarvounaris/Twig,iKwinto/Twig,nicolas-grekas/Twig,huang53798584/Twig,nicolas-grekas/Twig,derickr/Twig,apishka/templater,huang53798584/Twig,hhamon/Twig,znerol/Twig,nicolas-grekas/Twig,jamessingizi/Twig,dkarvounaris/Twig,twigphp/Twig,moufmouf/Twig,Rvanlaak/Twig,gencer/Twig,gamernetwork/Twig,znerol/Twig,gencer/Twig,moufmouf/Twig,framewr/Twig,znerol/Twig,fsw/Twig,moufmouf/Twig,nicolas-grekas/Twig,framewr/Twig,jamessingizi/Twig,framewr/Twig,jamessingizi/Twig,iKwinto/Twig,loi-chuanoi/Twig,twigphp/Twig,dkarvounaris/Twig,craue/Twig,hhamon/Twig,Rvanlaak/Twig,derickr/Twig,fsw/Twig,craue/Twig,twigphp/Twig,nicolas-grekas/Twig