code: function (oEvent) {
  				var isOpenUI5 = this.getView().getModel("welcomeView").getProperty("/isOpenUI5"),
  					sUrl = isOpenUI5 ? "http://openui5.org/download.html" : "https://tools.hana.ondemand.com/#sapui5";
  				window.open(sUrl, "_blank");
  			}
docs: Redirects to the UI5 download page
  @param {sap.ui.base.Event} oEvent the Button press event
  @public