text: /*global define*/
  define([
          '../Core/freezeObject'
      ], function(
          freezeObject) {
      'use strict';
  
      /**
       * The types of imagery provided by Bing Maps.
       *
       * @exports BingMapsStyle
       *
       * @see BingMapsImageryProvider
       */
      var BingMapsStyle = {
          /**
           * Aerial imagery.
           *
           * @type {String}
           * @constant
           */
          AERIAL : 'Aerial',
  
          /**
           * Aerial imagery with a road overlay.
           *
           * @type {String}
           * @constant
           */
          AERIAL_WITH_LABELS : 'AerialWithLabels',
  
          /**
           * Roads without additional imagery.
           *
           * @type {String}
           * @constant
           */
          ROAD : 'Road',
  
          /**
           * Ordnance Survey imagery
           *
           * @type {String}
           * @constant
           */
          ORDNANCE_SURVEY : 'OrdnanceSurvey',
  
          /**
           * Collins Bart imagery.
           *
           * @type {String}
           * @constant
           */
          COLLINS_BART : 'CollinsBart'
      };
  
      return freezeObject(BingMapsStyle);
  });