code: function(rm, sClassName, bShouldAdd) {
  			if (sClassName && (!!bShouldAdd || arguments.length == 2)) {
  				rm.addClass(sClassName);
  				if (TAGCONTEXT) {
  					TAGCONTEXT.writeClasses = true;
  				}
  			}
  			return TableRendererUtils;
  		}
docs: Adds the given CSS class if no condition is given or the condition is truthy.
  
  @param {sap.ui.core.RenderManager} rm Instance of the rendermanager
  @param {string} sClassName The CSS class which should be written
  @param {boolean} [bShouldAdd] optional condition
  
  @returns TableRendererUtils to allow method chaining
  @private