text: /*****************************************************************************
   * Open MCT, Copyright (c) 2014-2020, United States Government
   * as represented by the Administrator of the National Aeronautics and Space
   * Administration. All rights reserved.
   *
   * Open MCT is licensed under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   * http://www.apache.org/licenses/LICENSE-2.0.
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations
   * under the License.
   *
   * Open MCT includes source code licensed under additional open source
   * licenses. See the Open Source Licenses file (LICENSES.md) included with
   * this source code distribution or the Licensing information page available
   * at runtime from the About dialog for additional information.
   *****************************************************************************/
  
  define(
      [],
      function () {
  
          /**
           * Adds placeholder domain object models for any models which
           * fail to load from the underlying model service.
           * @constructor
           * @memberof platform/core
           * @param {ModelService} modelService this service to decorate
           * @implements {ModelService}
           */
          function MissingModelDecorator(modelService) {
              this.modelService = modelService;
          }
  
          function missingModel(id) {
              return {
                  type: "unknown",
                  name: "Missing: " + id
              };
          }
  
          MissingModelDecorator.prototype.getModels = function (ids) {
              function addMissingModels(models) {
                  var result = {};
                  ids.forEach(function (id) {
                      result[id] = models[id] || missingModel(id);
                  });
  
                  return result;
              }
  
              return this.modelService.getModels(ids).then(addMissingModels);
          };
  
          return MissingModelDecorator;
      }
  );
  
  