code: private void renderOption(final WMultiSelect listBox, final Object option,
  			final int optionIndex, final XmlStringBuilder html,
  			final List<?> selections, final boolean renderSelectionsOnly) {
  		boolean selected = selections.contains(option);
  
  		if (selected || !renderSelectionsOnly) {
  			// Get Code and Desc
  			String code = listBox.getCode(option, optionIndex);
  			String desc = listBox.getDesc(option, optionIndex);
  			// Render Option
  			html.appendTagOpen("ui:option");
  			html.appendAttribute("value", code);
  			html.appendOptionalAttribute("selected", selected, "true");
  			html.appendClose();
  			html.appendEscaped(desc);
  			html.appendEndTag("ui:option");
  		}
  	}
docs: Renders a single option within the list box.
  
  @param listBox the list box being rendered.
  @param option the option to render.
  @param optionIndex the index of the option. OptionGroups are not counted.
  @param html the XmlStringBuilder to paint to.
  @param selections the list of selected options.
  @param renderSelectionsOnly true to only render selected options, false to render all options.