Not able to pass classes and objects via job's data

I want to pass an object created before creating the job, and a class to the job's data. That job is generic and would be working on multiple classes depending on properties passed to the job.
I do not want to hard code the class names in my job processing.
But the job process that I have written, does not receive class and method values, the whole key-value pair is missing from job.data. All other simple key-value pairs are present.

Example:

```
const job = this.queue.create(jobType, {
title: 'Some title for '+ source,
identifier: userIdentifier,
source: source,
graphLoader: this.getGraphLoader(source), // This is a class
redis: this.redis // This is an object
}).backoff({delay: graphConstants.graphPopulationRetryDelay,
type: 'exponential'}).
```

What my job.data includes:

```
{ title: 'Some title for abcd',
identifier: '79398',
source: 'abcd',
redis:
{ options: { host: 'xx.xx.xx.xxx', port: 6379, db: '14', sep: '--' }} }
```

As is visible, the class key-value pair is missing. And the object's key value pair simply is an object with the object's attribute, not the actual object!

How do I find a solution for this?

Start at the queue.create call shown in the issue and trace how job data is serialized before it reaches the worker's job.data. Compare the handling of the class and object values with the simple key-value fields, then verify the intended behavior with a focused reproduction; done means the behavior or its supported usage is documented and confirmed.

Written by the indexing model from the issue text.