oDriver = null; if ($oDriver instanceof \RainLoop\Providers\PersonalAddressBook\PersonalAddressBookInterface) { $this->oDriver = $oDriver; } } /** * @return bool */ public function IsActive() { return $this->oDriver instanceof \RainLoop\Providers\PersonalAddressBook\PersonalAddressBookInterface && $this->oDriver->IsSupported(); } /** * @return bool */ public function IsSupported() { return $this->oDriver instanceof \RainLoop\Providers\PersonalAddressBook\PersonalAddressBookInterface && $this->oDriver->IsSupported(); } }