```coffeescript
angular.module('doubtfire.admin.states', [
  'doubtfire.admin.states.units'
  'doubtfire.admin.states.users'
])
```

Add teaching period state to doubtfire.admin
user
```coffeescript
angular.module('doubtfire.admin.states', [
  'doubtfire.admin.states.teachingperiods'
  'doubtfire.admin.states.units'
  'doubtfire.admin.states.users'
])
```
assistant