old_contents: # coding=utf-8
  from flask.ext.restful import Resource, fields, marshal_with
  from jormungandr import i_manager
  from make_links import add_coverage_link, add_collection_links, clean_links
  from converters_collection_type import collections_to_resource_type
  from collections import OrderedDict
  
  
  region_fields = {
      "id": fields.String(attribute="region_id"),
      "start_production_date": fields.String,
      "end_production_date": fields.String,
      "status": fields.String,
      "shape": fields.String,
  }
  regions_fields = OrderedDict([
      ("regions", fields.List(fields.Nested(region_fields)))
  ])
  
  collections = collections_to_resource_type.keys()
  
  
  class Coverage(Resource):
  
      @clean_links()
      @add_coverage_link()
      @add_collection_links(collections)
      @marshal_with(regions_fields)
      def get(self, region=None, lon=None, lat=None):
          return i_manager.regions(region, lon, lat), 200
  
new_contents: # coding=utf-8
  from flask.ext.restful import Resource, fields, marshal_with
  from jormungandr import i_manager
  from make_links import add_coverage_link, add_coverage_link, add_collection_links, clean_links
  from converters_collection_type import collections_to_resource_type
  from collections import OrderedDict
  from fields import NonNullNested
  
  
  region_fields = {
      "id": fields.String(attribute="region_id"),
      "start_production_date": fields.String,
      "end_production_date": fields.String,
      "status": fields.String,
      "shape": fields.String,
      "error": NonNullNested({
          "code": fields.String,
          "value": fields.String
      })
  }
  regions_fields = OrderedDict([
      ("regions", fields.List(fields.Nested(region_fields)))
  ])
  
  collections = collections_to_resource_type.keys()
  
  
  class Coverage(Resource):
  
      @clean_links()
      @add_coverage_link()
      @add_collection_links(collections)
      @marshal_with(regions_fields)
      def get(self, region=None, lon=None, lat=None):
          return i_manager.regions(region, lon, lat), 200
  
subject: Add error field to region