How to retrieve a job struct inside a decorator

I have the following scenario I want to solve with Oban:

A job will be created that will fetch a list of users
For that list, I want to chunk them and create a job for each job that will do send an email for the users.

This seems like a good use of workflows, basically I start my workflow with just one job:

    Workflow.new()
    |> Workflow.add(:chunk_investors, new_chunk_investors(buy_lists_ids, actor_id))
    |> Oban.insert_all()

Now, inside the job, I will have the chunked lists and append jobs to the workflow, something like this:

  @job [queue: :email]
  def chunk_investors(buy_lists_ids, actor_id) do
    lists = ...

    {:ok, jobs} = Workflow.all_jobs(job)

    lists
    Enum.with_index()
    Enum.reduce(Workflow.append(jobs), fn {list, index}, jobs ->
      Workflow.add("send_email_#{index}", new_send_email(list, actor_id))
    end)
    |> Oban.insert_all()

    :ok
  end

I think this should probably work fine, the issue is that i don’t have the job struct to call Workflow.all_jobs when my job is decorated… Is there some way to retrieve it so this can work? If not, is there some other way to recover the workflow?