getConfiguration() protected méthode

protected getConfiguration ( )
 protected function getConfiguration()
 {
     if (!isset($this->ql)) {
         $this->ql = new QueryLogger();
     }
     $config = parent::getConfiguration();
     $config->setLoggerCallable($this->ql);
     return $config;
 }
 protected function getConfiguration()
 {
     $config = parent::getConfiguration();
     $config->setDefaultDB('test_default');
     return $config;
 }