added unit tests to prove the issue with the current introspection exception code
added unit tests to prove the issue with the current introspection exception code

robregonm/Twig,fsw/Twig,Rvanlaak/Twig,hhamon/Twig,sstok/Twig,phansys/Twig,markstory/Twig,dkarvounaris/Twig,nicolas-grekas/Twig,derickr/Twig,huang53798584/Twig,bocharsky-bw/Twig,framewr/Twig,twigphp/Twig,nicolas-grekas/Twig,derickr/Twig,maartendekeizer/Twig,hason/Twig,Tobion/Twig,framewr/Twig,fsw/Twig,hason/Twig,gamernetwork/Twig,bocharsky-bw/Twig,znerol/Twig,fsw/Twig,craue/Twig,huang53798584/Twig,peterkokot/Twig,jamessingizi/Twig,jamessingizi/Twig,gamernetwork/Twig,nicolas-grekas/Twig,twigphp/Twig,moltin/Twig,robregonm/Twig,moufmouf/Twig,loi-chuanoi/Twig,znerol/Twig,Rvanlaak/Twig,iKwinto/Twig,moufmouf/Twig,iKwinto/Twig,Rvanlaak/Twig,peterkokot/Twig,sstok/Twig,Tobion/Twig,apishka/templater,apishka/templater,bocharsky-bw/Twig,craue/Twig,gencer/Twig,dkarvounaris/Twig,gamernetwork/Twig,huang53798584/Twig,derickr/Twig,moufmouf/Twig,markstory/Twig,dkarvounaris/Twig,hhamon/Twig,hhamon/Twig,Tobion/Twig,twigphp/Twig,moltin/Twig,moltin/Twig,framewr/Twig,znerol/Twig,hason/Twig,nicolas-grekas/Twig,nicolas-grekas/Twig,robregonm/Twig,jamessingizi/Twig,iKwinto/Twig,phansys/Twig,maartendekeizer/Twig,gencer/Twig