/**
* Get the instance url.
*
* @return string
*/
public function instanceUrl()
{
return is_null($this['id']) ? '/v1/account' : parent::instanceUrl();
}
/**
* This is a special case because the application fee endpoint has an
* underscore in it. The parent `className` function strips underscores.
*
* @param string $class
*
* @return string
*/
public static function className($class = '')
{
return parent::className();
}