Common/Model/Notify.php
public function isEmpty()
    {
        return empty($this->subject)
            || (empty($this->customMessage) && empty($this->paymentMessage) && empty($this->shipmentMessage));
    }
public function isEmpty()
    {
        return empty($this->subject)
            || (empty($this->customMessage) && empty($this->paymentMessage) && empty($this->shipmentMessage));
    }
public function isEmpty ( ) { return empty ( $ this -> subject ) || ( empty ( $ this -> customMessage ) && empty ( $ this -> paymentMessage ) && empty ( $ this -> shipmentMessage ) ) ; }
Returns whether there is no defined message.

@return bool
Returns whether there is no defined message .