protected void updateContent() {
String textHtml = "";
if (toolTipConfig.getRenderer() != null) {
Object data = toolTipConfig.getData();
ToolTipRenderer r = toolTipConfig.getRenderer();
SafeHtml html = r.renderToolTip(data);
textHtml = html.asString();
} else {
textHtml = Util.isEmptyString(bodyHtml) ? " " : bodyHtml;
}