old_contents: # Python 2 and 3
  from __future__ import unicode_literals
  
  from ...models import Address
  from ...models import AgencyDocument
  from ...models.base import BaseModel
  from .agency_chain import AgencyChain
  
  from ..base import Resource
  from ..tour import Promotion
  
  
  class AgencyEmail(BaseModel):
      _as_is_fields = ['type', 'address']
  
  
  class Agency(Resource):
      _resource_name = 'agencies'
      _is_listable = False
      _is_parent_resource = True
  
      _as_is_fields = [
          'id',
          'href',
          'name',
          'booking_currencies',
          'latitude',
          'longitude',
          'transactional_email',
          'communication_preferences',
          'override_agency_secondary',
          'passenger_notifications',
          'agent_notifications',
      ]
      _date_time_fields_local = ['date_created']
      _model_fields = [('address', Address)]
      _resource_fields = [('agency_chain', AgencyChain)]
      _model_collection_fields = [
          ('documents', AgencyDocument),
          ('emails', AgencyEmail),
          ('agency_chains', 'AgencyChain'),
      ]
      _resource_collection_fields = [
          ('bookings', 'Booking'),
          ('agents', 'Agent'),
          ('promotions', Promotion),
      ]
  
new_contents: # Python 2 and 3
  from __future__ import unicode_literals
  
  from ...models import Address
  from ...models import AgencyDocument
  from ...models.base import BaseModel
  from .agency_chain import AgencyChain
  
  from ..base import Resource
  from ..tour import Promotion
  
  
  class AgencyEmail(BaseModel):
      _as_is_fields = ['type', 'address']
  
  
  class Agency(Resource):
      _resource_name = 'agencies'
      _is_listable = False
      _is_parent_resource = True
  
      _as_is_fields = [
          'id',
          'href',
          'name',
          'booking_currencies',
          'latitude',
          'longitude',
          'transactional_email',
          'communication_preferences',
          'override_agency_secondary',
          'passenger_notifications',
          'agent_notifications',
          'preferred_display_name',
      ]
      _date_time_fields_local = ['date_created']
      _model_fields = [('address', Address)]
      _resource_fields = [('agency_chain', AgencyChain)]
      _model_collection_fields = [
          ('documents', AgencyDocument),
          ('emails', AgencyEmail),
          ('agency_chains', 'AgencyChain'),
      ]
      _resource_collection_fields = [
          ('bookings', 'Booking'),
          ('agents', 'Agent'),
          ('promotions', Promotion),
      ]
  
subject: Add preferred_display_name to fields list for agency