How to customize the ArcGIS print legend text using javascript

Is there a way to customize ArcGIS print service so that it will not print the layer id and the string that is given in ClassBreakRenderer in the legend.

var layer = new FeatuerLayer(url, {
  id: "featureLayerId",
  opacity: 0.5
});

var renderer = new ClassBreakRenderer(null, "columnName");

var legendLayer = new LegendLayer();
lengendLayer.layerId = "featureLayerId";

Thanks in advance.