code: function StubServer(app) {
    _classCallCheck(this, StubServer);
  
    this._app = app;
  
    app.createServer = this.createServer_.bind(this, app.createServer || function () { throw new Error("no registered transport provider"); });
  }
docs: Representes Stub Server
  
  @class StubServer
  @param app  IOPA AppBuilder App
  @constructor
  @public