ExternalMessageSerializer example

'id' => 2,
                'data' => [
                    'message' => json_encode([
                        'foo' => 'fooValue',
                        'bar' => [
                            'baz' => 'bazValue',
                        ],
                    ]),
                ],
            ],
            (new ExternalMessage('fooValue'))->setBar(['baz' => 'bazValue']),
            new ExternalMessageSerializer(),
        ];
    }

    public static function rejectedRedisEnvelopeProvider(): \Generator
    {
        yield [
            [
                'id' => 1,
                'data' => [
                    'message' => json_encode([
                        'body' => '{"message": "Hi"}',