Added addReference() untill ZF-2379 is resolved
Added addReference() untill ZF-2379 is resolved

git-svn-id: d32e76a03a3123f3a7fc632f553a4a003f6b8db0@111 242cd0b0-a150-0410-b6ef-417cb531347b

robinsk/zym,robinsk/zym