Quote/EventListener/QuoteListener.php
protected function getSaleFromEvent(ResourceEventInterface $event)
    {
        $resource = $event->getResource();

        if (!$resource instanceof QuoteInterface) {
            throw new InvalidArgumentException("Expected instance of QuoteInterface");
        }

        return $resource;
    }
protected function getSaleFromEvent(ResourceEventInterface $event)
    {
        $resource = $event->getResource();

        if (!$resource instanceof QuoteInterface) {
            throw new InvalidArgumentException("Expected instance of QuoteInterface");
        }

        return $resource;
    }
protected function getSaleFromEvent ( ResourceEventInterface $ event ) { $ resource = $ event -> getResource ( ) ; if ( ! $ resource instanceof QuoteInterface ) { throw new InvalidArgumentException ( "Expected instance of QuoteInterface" ) ; } return $ resource ; }
@inheritdoc

@return QuoteInterface
@inheritdoc