public function uninstall()
 {
     if (!parent::uninstall() || !HipayLogger::DropTables() || !Configuration::deleteByName('HIPAY_API_USERNAME') || !Configuration::deleteByName('HIPAY_API_PASSWORD') || !Configuration::deleteByName('HIPAY_TEST_API_USERNAME') || !Configuration::deleteByName('HIPAY_TEST_API_PASSWORD') || !Configuration::deleteByName('HIPAY_TEST_MODE') || !Configuration::deleteByName('HIPAY_PAYMENT_MODE') || !Configuration::deleteByName('HIPAY_CHALLENGE_URL') || !Configuration::deleteByname('HIPAY_CSS_URL') || !Configuration::deleteByname('HIPAY_ALLOWED_CARDS') || !Configuration::deleteByname('HIPAY_TEMPLATE_MODE') || !Configuration::deleteByname('HIPAY_SELECTOR_MODE') || !Configuration::deleteByname('HIPAY_IFRAME_WIDTH') || !Configuration::deleteByname('HIPAY_IFRAME_HEIGHT') || !Configuration::deleteByname('HIPAY_ALLOWED_LOCAL_CARDS') || !Configuration::deleteByname('HIPAY_THREEDSECURE') || !Configuration::deleteByname('HIPAY_THREEDSECURE_AMOUNT') || !Configuration::deleteByname('HIPAY_MANUALCAPTURE') || !Configuration::deleteByname('HIPAY_MEMORIZE') || !parent::uninstall()) {
         return false;
     }
     return true;
 }