old_contents: from django.db import models
  
  # Create your models here.
  
new_contents: """
  Module bdp_fe.jobconf.models
  
  Create your models here.
  """
  
  from django.db import models
  
  class Job(models.Model):
      """
      A Job is a calculation to be run on the BDP
      """
      date = models.DateTimeField('date created')
  
subject: Include a first model, Job