PHPCAS-100 Add a missing function to fully implement the interface
PHPCAS-100 Add a missing function to fully implement the interface

git-svn-id: a2b4172828c9e542007114f77bcc8d94eff18d1f@24383 f5dbab47-78f9-eb45-b975-e544023573eb

rakesh-mohanta/phpCAS,mickelfeng/phpCAS,Jasig/phpCAS,chand3040/phpCAS,yangchunyong/phpCAS,neopeak/phpCAS,fh/phpCAS,snelg/phpCAS