Add default class when original was not found

[bguban]

Fixes #24

[virtualstaticvoid]

Hi @bguban

Thanks for the PR!

May I request the following changes:

1. It would be better to have the "replacement type" be called UnknownDefinition instead of the generic UninitializedConstant.
2. The visit_type(attribute) is also for Job types, so it should handle the unknown job type scenario too. To keep it simple, the "replacement type" could be UnknownDefinitionOrJob instead of needing two types.
3. Please add a test to cover the changes.

Thanks!

[bguban]

Hi @virtualstaticvoid

I can easily change the class name but I need help with tests. Any suggestions on where would be a proper place to check it? Should I create a separate test for RedisDeserializationVisitor or add an expectation to an existing test?

[virtualstaticvoid]

Good questions! I'm also wondering what the ramifications would be if retrying a task against the Unknown type will be, so will want to cover that in the tests too.

I'll have a think to see what makes sense.

Btw I gave your UI a try. Managed to get it running very easily as per the readme instructions. I guess this PR should get sorted so that it works properly if a module or job type is missing.