protected function resetSubscriptionParams() {
        foreach($this->options as $op=>$junk){
            if(preg_match("#Subscription.#",$op)){
                unset($this->options[$op]);
            }
        }
    }
protected function resetSubscriptionParams() {
        foreach($this->options as $op=>$junk){
            if(preg_match("#Subscription.#",$op)){
                unset($this->options[$op]);
            }
        }
    }
protected function resetSubscriptionParams ( ) { foreach ( $ this -> options as $ op => $ junk ) { if ( preg_match ( "#Subscription.#" , $ op ) ) { unset ( $ this -> options [ $ op ] ) ; } } }
Resets the subscription-specific parameters.

Since these are required parameters, these options should not be removed
without replacing them, so this method is not public.
Resets the subscription - specific parameters .