public function decrementQuantity(int $count = 1)
    {
        $this->updateQuantity(max(1, $this->quantity - $count));

        return $this;
    }
public function decrementQuantity(int $count = 1)
    {
        $this->updateQuantity(max(1, $this->quantity - $count));

        return $this;
    }
public function decrementQuantity ( int $ count = 1 ) { $ this -> updateQuantity ( max ( 1 , $ this -> quantity - $ count ) ) ; return $ this ; }
Decrement the quantity of the subscription.

@param int $count

@return $this
Decrement the quantity of the subscription .