code: function FileDownloader(fileClient, statusService, progressService) {
  		this.fileClient = fileClient;
  		this.statusService = statusService;
  		this.progressService = progressService;
  	}
docs: @name orion.download.FileDownloader
  @class
  @description
  <p>Requires service {@link orion.core.ContentTypeRegistry}</p>
  
  @param {orion.fileClient.FileClient} [fileClient] The file client that supports readBlob API.
  @param {orion.status.StatusReportingService} [statusService=null] Optional. If defined status is reported while downloading.
  @param {orion.progress.ProgressService} [progressService=null] Optional. If defined progress is reported while downloading.