ajax parameter deprecated in Controller

[btc.dev]

Hi,

 

In the Controller source, there's this

		// Usage of ajax parameter is deprecated
		$this->ajax = Tools::getValue('ajax') || Tools::isSubmit('ajax');

But if this is truly deprecated nowhere do I see the alternative to do ajax processing in the controllers ?

 

Anybody has an idea about this ?

 

Regards,

 

btc