ShippingMethodValidator example

'priority' => 2,
                ],
            ],
            ['id' => 'D1'],
            $this->createMock(EntityExistence::class),
            '/0/'
        );

        $fakeConnection = new FakeConnection([]);

        $event = new PreWriteValidationEvent($this->context, $commands);
        $validator = new ShippingMethodValidator($fakeConnection);
        $validator->preValidate($event);

        $exception = null;

        try {
            $event->getExceptions()->tryToThrow();
        } catch (WriteException $e) {
            $exception = $e;
        }

        if (!$success) {