make dummy exception extend exception
make dummy exception extend exception

vutung2311/dbal,lcobucci/dbal,deeky666/dbal,kimhemsoe/dbal,Tobion/dbal,vortgo/dbal,gencer/dbal,stof/dbal,kimhemsoe/dbal,doctrine/dbal,stchr/dbal,drieschel/dbal,lcobucci/dbal,v-bartusevicius/dbal,vutung2311/dbal,vortgo/dbal,gencer/dbal,drieschel/dbal,stchr/dbal,stof/dbal,BenMorel/dbal,mikeSimonson/dbal,v-bartusevicius/dbal,mikeSimonson/dbal,doctrine/dbal,BenMorel/dbal,deeky666/dbal,Tobion/dbal