String (@NotNull @Nls String text, @Nullable @Nls String appendix) { HtmlBuilder result = new HtmlBuilder(); result.append(text); if (appendix != null) { result.br(); result.append(HtmlChunk.span("color:#" + ColorUtil.toHex(JBColor.gray) + "; font-size:small").addText(appendix)); } return result.wrapWithHtmlBody().toString(); }