code: function (oRm, sUri, bMessageNotifier) {
  			if (sUri == null || sUri == "") {
  				var icon = new Icon({
  					useIconTooltip: false
  				});
  				icon.addStyleClass("sapUiNotifierIcon");
  
  				if (bMessageNotifier) {
  					icon.setSrc("sap-icon://alert");
  				} else {
  					icon.setSrc("sap-icon://notification-2");
  				}
  				oRm.renderControl(icon);
  				return;
  			}
  
  			oRm.write("<img alt=\"\"");
  			oRm.addClass("sapUiNotifierIcon");
  			oRm.writeClasses();
  
  			oRm.writeAttributeEscaped("src", sUri);
  			oRm.write("/>");
  		}
docs: Renders the notifier's icon. If there is no icon set a default icon is
  used