public Map<String, ContainerModel> getContainers() {
    return containers;
  }
<p>
The data model used to represent a Samza job. The model is used in the job
coordinator and SamzaContainer to determine how to execute Samza jobs.
</p>

<p>
The hierarchy for a Samza's job data model is that jobs have containers, and
containers have tasks. Each data model contains relevant information, such as
an id, partition information, etc.
</p>
samza-api/src/main/java/org/apache/samza/job/model/JobModel.java