/**
  * {@inheritdoc}
  */
 protected function getDefaults()
 {
     return array_merge(parent::getDefaults(), [self::CONFIG_REDIRECT_URI => '']);
 }
 /**
  * {@inheritdoc}
  */
 protected function getDefaults()
 {
     return parent::getDefaults() + [self::CONFIG_REFRESH_TOKEN => ''];
 }
 /**
  * @inheritdoc
  */
 protected function getDefaults()
 {
     return parent::getDefaults() + ['redirect_uri' => ''];
 }
 /**
  * @inheritdoc
  */
 protected function getDefaults()
 {
     return parent::getDefaults() + ['refresh_token' => ''];
 }
 /**
  * {@inheritdoc}
  */
 protected function getDefaults()
 {
     return array_merge(parent::getDefaults(), ['redirect_uri' => '']);
 }