new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.11 on 2017-08-09 19:48
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('clowder_server', '0006_auto_20170504_1834'),
      ]
  
      operations = [
          migrations.AddField(
              model_name='alert',
              name='expire_at',
              field=models.DateTimeField(blank=True, null=True),
          ),
      ]
  
subject: Add migration for expire at