/**
* Fetch our proxy ticket.
*
* Descendent classes should call this method once their service URL is available
* to initialize their proxy ticket.
*
* @return void
* @throws CAS_OutOfSequenceException If called after a proxy ticket has
* already been initialized.
*/
protected function initializeProxyTicket()
{
if (!empty($this->_proxyTicket)) {
throw new CAS_OutOfSequenceException('Already initialized, cannot initialize again.');
}
// Allow usage of a particular CAS_Client for unit testing.
if (empty($this->_casClient)) {
phpCAS::initializeProxiedService($this);
} else {
$this->_casClient->initializeProxiedService($this);
}
}