/**
*
* Ensures only one instance is loaded or can be loaded.
*
* @static
* @return class instance
*/
public static function instance($upgrade_url, $plugin_name, $product_id, $api_key, $activation_email, $renew_license_url, $instance, $domain, $software_version, $plugin_or_theme, $extra = '')
{
if (is_null(self::$_instance)) {
self::$_instance = new self($upgrade_url, $plugin_name, $product_id, $api_key, $activation_email, $renew_license_url, $instance, $domain, $software_version, $plugin_or_theme, $extra);
}
return self::$_instance;
}
/**
* Update Check Class.
*
* @return SwiftyApiManagerUpdateApiCheck
*/
public function our_update_check($upgrade_url, $plugin_name, $product_id, $api_key, $activation_email, $renew_license_url, $instance, $domain, $software_version, $plugin_or_theme, $extra = '')
{
return SwiftyApiManagerUpdateApiCheck::instance($upgrade_url, $plugin_name, $product_id, $api_key, $activation_email, $renew_license_url, $instance, $domain, $software_version, $plugin_or_theme, $extra);
}